This is why you're learning differential equations

2024 ж. 10 Мам.
3 379 611 Рет қаралды

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  • When I teach about differential equations, I'll make sure to do a similar introduction, it's really brilliant

    @Kolinnor@Kolinnor3 жыл бұрын
    • Speaking of brilliant, this comment is sponsored by...

      @gsjxbxbxhdhs5352@gsjxbxbxhdhs53523 жыл бұрын
    • In my opinion there are way easier and more general examples to use, for learning about differential equations. 3blue1brown has done a great job in that regard. I very much prefer the classic pendulum and heat-transfer as starting points. Just not the chase curve. But this might be just my personal preference.

      @ThePianist4Life@ThePianist4Life3 жыл бұрын
    • Why use "d" why not use the delta symbol?

      @Build_the_Future@Build_the_Future3 жыл бұрын
    • Delta is for partial derivatives

      @94mathdude@94mathdude3 жыл бұрын
    • @@gsjxbxbxhdhs5352 Nord vpn

      @SiddharthSingh-zd7ny@SiddharthSingh-zd7ny3 жыл бұрын
  • them: do you even lift bro? me: yes. barbells, with no mass.

    @johnchessant3012@johnchessant30123 жыл бұрын
    • Lel

      @sudheerthunga2155@sudheerthunga21553 жыл бұрын
    • @FullTimeSlacker lololo

      @saicharanritwikchinni9608@saicharanritwikchinni96083 жыл бұрын
    • It's impossible, technically.

      @chandrakumar2940@chandrakumar29403 жыл бұрын
    • @@chandrakumar2940 r/whoosh

      @saicharanritwikchinni9608@saicharanritwikchinni96083 жыл бұрын
    • It is not considered in the equation because the mass of the barbells ain't changing. So for the sake of simplicity in an already complex equation for the general masses, they've been left out.

      @domu64@domu643 жыл бұрын
  • When I learned physics at University one of the most satisfying experiences was getting to grips with calculus enough to use it to derive equations as it allowed me to wield mathematics to describe the world, which felt awesome.

    @hyiderhyider1787@hyiderhyider17873 жыл бұрын
    • Dont click his link,its most likely scam

      @nq5044@nq50442 жыл бұрын
    • @@nq5044 most likely, they’ve placed this exact comment in other comments in this channel

      @tizurl@tizurl2 жыл бұрын
    • Lies again? Dear RJ

      @NazriB@NazriB2 жыл бұрын
    • The reason I like math now. Back in high school they made it too grindy for me, but now I'm loving it as the grind pays off little by little.

      @hisdudeness4537@hisdudeness4537 Жыл бұрын
    • I feel like Goku sometimes

      @Brekstahkid@Brekstahkid11 ай бұрын
  • I asked my Math teacher the same question when he was teaching DE. And the whole class laughed at me. Thanks for the video.

    @commenterdek3241@commenterdek32413 жыл бұрын
    • Obviously while you were studying the text they were catching up on the latest season of Numb3rs. Study smarter, not harder! :D

      @Wrek100@Wrek1003 жыл бұрын
    • It reminds me of the *_dark water in this video_* kzhead.info/sun/h9Bun6ySqXuQomg/bejne.html&.wsep

      @justinmiller129@justinmiller1292 жыл бұрын
    • Bcoz u were studying for knowledge and they were studying to pass an exam

      @sarthak8350@sarthak83502 жыл бұрын
    • Fools

      @bhartiyacreature4950@bhartiyacreature49502 жыл бұрын
    • I'm 1 year late but this happened in my class yesterday, everyone laughed not at the student but with him because it sounded like they were funnily teasing the professor.

      @TheReaper002@TheReaper0022 жыл бұрын
  • Me wanting to be an engineer: Haha, I'm in danger

    @spectrumnight8937@spectrumnight89373 жыл бұрын
    • Just keep practicing your math. Calculus may be challenging but it is really useful.

      @wyattb3138@wyattb31383 жыл бұрын
    • @@wyattb3138 I know, but my braincells are in danger fellow engineer

      @spectrumnight8937@spectrumnight89373 жыл бұрын
    • Spectrum Night, apart from doing all the math, engineering really depends on your creativity and being able to think of unique solutions to problems. After all, engineering is just problem solving.

      @wyattb3138@wyattb31383 жыл бұрын
    • Trust me.iam engginer .wtf just happen here

      @hafidza.p8584@hafidza.p85843 жыл бұрын
    • Laughed, well this shit it's hard and endless, don't know how to interiorize it

      @angelomartino4667@angelomartino46673 жыл бұрын
  • Differential Equations are definitely a household name in the applications of maths. They are really fun when you know how to utilize all of their techniques. Awesome work!

    @RC32Smiths01@RC32Smiths013 жыл бұрын
    • omg yes! Diff EQ should be taught way earlier so students of math can see how all the "useless shit" they learn comes to life!

      @CBielski87@CBielski873 жыл бұрын
    • Just a question, i'm currently in 11th grade and I want to ask is there literally any application of those trigonometry identities that you had to memorize in high school? Cuz I have probably memorized 40 of them and it's driving me crazy!

      @livethefuture2492@livethefuture24923 жыл бұрын
    • @@livethefuture2492 I believe that Trigonometric Identities are absolutely critical for things such as buildings and architecture, trying to find the lengths and angles of certain objects, as well as finding the existence of 0, 1, or even 2 possible triangles. It's also very useful in Engineering, understanding the use of currents.

      @RC32Smiths01@RC32Smiths013 жыл бұрын
    • @@CBielski87 I think Differential Equations are something that someone really wants to do in order to really do it. They absolutely have their purposes, but it's something that you need to understand years of calculus and advanced math to really understand.

      @RC32Smiths01@RC32Smiths013 жыл бұрын
    • @@livethefuture2492 Trigonometry is fundamental in any engineering or scientific field. You have to memorize the basic identities and equations, because you'll use them a lot and frequently so you can't demonstrate them anytime, BUT you have also to understand their meaning.

      @tasis3835@tasis38353 жыл бұрын
  • "Let's assume there's no wind" When have I seen this line before..

    @simonhallin8909@simonhallin89093 жыл бұрын
    • Oh yeah!!! "Neglect friction" "Air resistance can be ignored" "Gravity free space" "Energy loss is negligible" "Disregarding relativistic effects" "Ignoring quantum effect of electrons" " sin(θ)=tan(θ)= θ " Sounds familiar, huhhhh

      @anujbangad3973@anujbangad39733 жыл бұрын
    • @@anujbangad3973 Aaahh, the noturious sin(x) = x. Just go ahead and put a 3 for pi and e while you're at it

      @simonhallin8909@simonhallin89093 жыл бұрын
    • @@simonhallin8909 Don't forget to assume the cow is spherical!

      @raghavsinha5298@raghavsinha52982 жыл бұрын
    • @@simonhallin8909 pi square is g

      @tarunbalchandbhaimulchanda6929@tarunbalchandbhaimulchanda69292 жыл бұрын
    • @@tarunbalchandbhaimulchanda6929 of course! But i prefer using e^2 instead

      @simonhallin8909@simonhallin89092 жыл бұрын
  • I am learning differential to slap my brother perfectly at the moment when he would be running to tell my mom that I failed in math.

    @EpicFox@EpicFox3 жыл бұрын
    • lmao

      @sumitno10@sumitno103 жыл бұрын
    • Same bro, but instead of brother, cousin.

      @sheepeeeyming8698@sheepeeeyming86983 жыл бұрын
    • @@sheepeeeyming8698 Your cosine?

      @Takin2000@Takin20003 жыл бұрын
    • @@Takin2000 so funny😂

      @sheepeeeyming8698@sheepeeeyming86983 жыл бұрын
    • @@Takin2000 bruh

      @themadladprince430@themadladprince4303 жыл бұрын
  • Good to know Zach :D

    @PapaFlammy69@PapaFlammy693 жыл бұрын
    • I thought you liked integration more :D

      @aaronrashid2075@aaronrashid20753 жыл бұрын
    • Hey papa!

      @nanigopalsaha2408@nanigopalsaha24083 жыл бұрын
    • @Flammable Maths , 57 is the goodest prime number :)

      @chhabisarkar9057@chhabisarkar90573 жыл бұрын
    • Numerically, you never derive, you integrate.

      @crazyphil7782@crazyphil77823 жыл бұрын
    • I'm not sure what the narrator is trying to say at 6:00, but that's not a differential equation in the usual sense at all, but actually a *differential inequality* ... it is generally true for any two vectors that 𝐀⁄|𝐀| · 𝐁⁄|𝐁| = 1 ⇔ 𝐀·𝐁 > 0 . So, all the problem stated at 6:00 is actually saying is that (𝐦 - 𝐜)·d𝐜⁄dt > 0; i.e. 𝐦·d𝐜⁄dt > 𝐜·d𝐜⁄dt. If the additional assumption |𝐜|² = 1 is being made, then since 𝐜·d𝐜⁄dt = d/dt (|𝐜|²/2) = 0, then the inequality reduces to 𝐦·d𝐜⁄dt > 0. *Any* unit vector 𝐜(t) function of time (i.e. |𝐜(t)|² = 1) for which 𝐦(t)·𝐜'(t) > 0 is a solution to the problem.

      @RockBrentwood@RockBrentwood3 жыл бұрын
  • Had a similar chain problem on a physics exam. Still haven't recovered mentally/emotionally.

    @patrickjdarrow@patrickjdarrow3 жыл бұрын
    • oh god i'm afraid of AP Physics a little now, at least toward the end of the year. I really only know the most basic information about movement and forces. I'm doing calc at the same time, so I don't even know that math. Hoping the class doesn't kick my ass too hard lmao Edit: It did, it did kick my ass

      @diondredunigan2583@diondredunigan25833 жыл бұрын
    • @mozart mechanics

      @patrickjdarrow@patrickjdarrow3 жыл бұрын
    • Diondre Dunigan you are fine, AP Physics 1 or 2 does not use Calculus, So you won’t see any differential equation problems. AP Physics C does use calculus however so if your taking AP physics C, but I doubt you would see difficult differential equations there. The math in AP physics 1 or 2, is not intensive at all so I wouldn’t worry!

      @biplovebaral8755@biplovebaral87553 жыл бұрын
    • @@biplovebaral8755 Thank you so much! I am taking AP Physics C, but it really all depends on what my school's curriculum is like in terms of physics. I passed my precalc class this year with an A, but my Trig class... You wouldn't think Trig/Algebra two quizzes could be so difficult, but my teacher made them so. But thanks for letting me know!

      @diondredunigan2583@diondredunigan25833 жыл бұрын
    • They give us this question in med school exam in India

      @SilentTricks@SilentTricks3 жыл бұрын
  • One of the best videos ive seen, it gave me some sort pf motivation to finally pay attention in math class since my teacher never explains why we are learning what we are learning

    @shrey2419@shrey2419 Жыл бұрын
    • a) cuz you will do more complex maths later and you will needs this building block b) cuz it's on the test next month These are the only reasons ever given to me. Truly, school math is only interesting to autists.

      @Subhumanoid_@Subhumanoid_ Жыл бұрын
    • for real, mine just tells us one method of solving it, doesn’t tell us how it works, and calls it good 😮

      @zachschroeder1740@zachschroeder1740 Жыл бұрын
    • I doubt even the teacher fully understood why he was teaching what he was.

      @sesughyandev@sesughyandev9 ай бұрын
  • When I studied aeronautical engineering at university I was amazed when I discovered that DE are the key to model many physical problems no matter if it is structural mechanics, thermodynamics, aerodynamics or electrical engineering.

    @rokker333@rokker333 Жыл бұрын
    • In which semester are you?

      @globalians1029@globalians1029Ай бұрын
  • "Differential equations are cool" ~Big Bang

    @realdragon@realdragon3 жыл бұрын
    • "Yeah really cool" ~Big Freeze

      @matteovasta2326@matteovasta23263 жыл бұрын
    • Big bang, come on

      @jonhtanzer6518@jonhtanzer65183 жыл бұрын
    • "nothing was ever anywhere, makes sense right? like I said it didn't happen" - bill wurtz

      @apokolypx@apokolypx3 жыл бұрын
    • The big bang is a hoax dont be decieved.

      @davidedmundtochi5228@davidedmundtochi52283 жыл бұрын
    • @@davidedmundtochi5228 I bet your one of those religious people right?

      @vaibhavagrawal3083@vaibhavagrawal30833 жыл бұрын
  • People who like math: wow this is interesting Me, who barely passed calc 2 and linear Algebra: *screeching noises*

    @countablyinfinite4904@countablyinfinite49043 жыл бұрын
    • I wanted to be an engineer. I can't number. So I went to biology lol

      @Dm-dw3tr@Dm-dw3tr3 жыл бұрын
    • @Bernd DasBrot like hell it's not

      @NerdyCatCoffeeee@NerdyCatCoffeeee3 жыл бұрын
    • Me who didnt memorize the multiplication tables because yes and then didn't know how to do division: *Intensive sweating*

      @Asrieloo@Asrieloo2 жыл бұрын
    • C's get degrees

      @oberdinger09@oberdinger092 жыл бұрын
    • Lol I baaaarely passed calc 1 and failed linear algebra

      @michaelespeland@michaelespeland2 жыл бұрын
  • And God said let there be dx

    @mahmoudfathy2074@mahmoudfathy20742 жыл бұрын
  • You know, I really enjoyed calculus last year and understood many of the real life applications, but I never knew about the pursuit curve thing before. Mathematics is just something else man.

    @revenger211@revenger2113 жыл бұрын
    • What's going on my Liege

      @DrakeRing@DrakeRing2 жыл бұрын
    • Ikr math is so cool it feels like I'm a seer discovering the mysteries of the universe

      @chrismarklowitz1001@chrismarklowitz10019 ай бұрын
  • 4:10 There's this famous example of a pursuit curve. The French wanted to make an anti ship missile. So they built a missile, slapped on a sensor, and then programmed the missile to always fly towards the target. In the first test, they launched against a *small* "drone" target. As the distance approached 0, the tightness of the turn required to remain on target approaches infinity. So it missed. It now locked on to a stationary buoy. But the buoy was WAY too *small* for the missile to hit, so it missed. Finally, it locked on to a *large* civilian cargo ship, which was minding its own business. The testers panic, because that ship is in range, it's so large they think the missile WILL hit, and they didn't bother to install a remote termination system. The missile again lowers its altitude to the sea skimming attack pattern. It makes the last course adjustments... ...and misses. Finally it runs out of fuel and crashes into a busy shipping lane. When Sweden's FOA (defence research institution) learnt of this, they fed the missile's guidance algorithm into their brand new (for that time) supercomputer, and the output predicted the exact flight pattern of that French missile. That was when the French leant about "CBDR-pursuit" (Constant Bearing Decreasing Range) and "PIP-guidance" (Predicted Impact Point).

    @HeaanLasai@HeaanLasai3 жыл бұрын
    • Holy shit. That is crazy!

      @johngddr5288@johngddr52883 жыл бұрын
    • @@manikanta2000 doesn't take that long tbh

      @smokeypillow@smokeypillow3 жыл бұрын
    • @@manikanta2000 i know i know

      @smokeypillow@smokeypillow3 жыл бұрын
    • yay weapons of war

      @user-zu1ix3yq2w@user-zu1ix3yq2w3 жыл бұрын
    • @@manikanta2000 It had a buildup, climax, cliffhanger, resolution and lessons learned in like a 60 second read. Worth.

      @kindlin@kindlin3 жыл бұрын
  • I love how intuitive he is with explaining it, it's easier to understand why it's important and gives it meaning.. something few ppl do but it seperates the good from not so good at explaining things

    @mike814031@mike8140313 жыл бұрын
  • Me acting as if I understood anything he just said: 🤓🤓

    @bostongalden1171@bostongalden11713 жыл бұрын
  • Knowing why I will be taking Diff Eq. this coming semester is half the battle. Everything you covered was very interesting to me and now I'm looking forward to taking the class and expanding my knowledge. Thanks for the informative video!

    @longrangelauber@longrangelauber2 жыл бұрын
  • Me watching this, avoiding actually learning the differential equations.

    @afreen5058@afreen50583 жыл бұрын
    • I've got an exam in differential equations in 3 days and your comment felt so close to my heart this moment haha

      @wojtekkowalski7403@wojtekkowalski74033 жыл бұрын
    • @@wojtekkowalski7403 😫😫😫😫😪😪😪

      @mwanikimwaniki6801@mwanikimwaniki68013 жыл бұрын
    • Today i got exam on differential equation, grade 12. It's kinda easy to solve them but my school didn't teach any application of this. The problems are too long it's exhausting

      @mosaicbrokenhearts2886@mosaicbrokenhearts28863 жыл бұрын
    • google is tracking you

      @deviks3421@deviks34213 жыл бұрын
    • @@mosaicbrokenhearts2886 This is pretty much reason why it sucked in highschool. We were not having any context. They just said: "'Solve this" Now when I'm studying engineering, we have context but its so damn hard because I did not learn it in high school.

      @jarskil8862@jarskil88623 жыл бұрын
  • gravity rounded to 10 * Laughs in physics *

    @bdr1414TV@bdr1414TV3 жыл бұрын
    • Straight up paused the video at that moment and went straight to comments. As an engineer, this hurts my body and soul.

      @seriyooow310@seriyooow3103 жыл бұрын
    • @@seriyooow310 same

      @priscilas4755@priscilas47552 жыл бұрын
    • @@seriyooow310 Wait don't engineers approximate e as 2 and π as 3, and g as π²?

      @78anurag@78anurag2 жыл бұрын
    • g=9,81 m/s period

      @RomanBellic-ez5fh@RomanBellic-ez5fh4 күн бұрын
  • It's wierd that in schools we are taught to solve them by just learning the formulas and getting the right answers and not the practical usage. It would have been easier to learn about them by having them connected to some practical usage.

    @jiteshjodhani589@jiteshjodhani5893 жыл бұрын
    • Like what

      @DairangerSentai7@DairangerSentai7 Жыл бұрын
    • @@DairangerSentai7 like you see in the video

      @masterbaits4108@masterbaits4108 Жыл бұрын
    • Maybe you were one of those people sleeping or picking your nose at the back of the class then, because they definitely mentioned it to my class.

      @Michael-mh2tw@Michael-mh2tw Жыл бұрын
    • @@Michael-mh2tw In a post-secondary, or like high-school? My high-school teachers never talked about applications, and yeah I did actually listen to the lesson

      @soupy5890@soupy5890 Жыл бұрын
    • @@soupy5890 no one was talking to you.

      @badabingbobsuruncle@badabingbobsuruncle Жыл бұрын
  • Me: Why are we learning this? Teacher: So, that's how you're going to solve it when it appears in examination Me: 🙃

    @KunalSaini97@KunalSaini973 жыл бұрын
    • The way school teaches maths is clever They have selected the most possibly inefficient way after not teaching at all

      @maxwellsequation4887@maxwellsequation48873 жыл бұрын
    • 🤣🤣🤣🤣exactly

      @shabnamkhatoon4980@shabnamkhatoon49802 жыл бұрын
    • @@maxwellsequation4887 Best comment. Thank you for saying this.

      @parthprashar8498@parthprashar8498 Жыл бұрын
  • Damn I wish more people understood just how mind blowing physics and Calculus really are. Like these equations describe the damn universe, the universe itself runs on mathematics and physics. Mathematics is literally God's language and it's so beautiful.

    @notmychairnotmyproblem@notmychairnotmyproblem3 жыл бұрын
    • You are the man Daluved "1"

      @DroneSatelliteView@DroneSatelliteView3 жыл бұрын
    • More likely the mathematics is reflecting our way to cope with complex ideas and to structure them.

      @skibaa1@skibaa13 жыл бұрын
    • The universe isn't run by mathematics, it is our language that we use to understand how the universe works

      @lucasdipa9889@lucasdipa98893 жыл бұрын
    • God is just an illusion.

      @vv8104@vv81043 жыл бұрын
    • @@vv8104 perhaps

      @notmychairnotmyproblem@notmychairnotmyproblem3 жыл бұрын
  • DEs was always one of my favorite courses

    @ChrisSutherlandPhys@ChrisSutherlandPhys3 жыл бұрын
    • It started out looking good for me but I quickly spiraled down. Have never recovered since then.

      @JohnFekoloid@JohnFekoloid2 жыл бұрын
  • wow i am feeling great to have found about a channel dedicated to application rather than only to theorem which we can easily find in textbook. KEEP IT UP!!!

    @dimpypandey7483@dimpypandey74832 жыл бұрын
  • I wish i had this KZhead when i went to school. People like you make the most valuable part of it, amazing. Thank you!

    @garysquarepants898@garysquarepants8983 жыл бұрын
  • Wondering video illustrating not simply the awesome power of calculus, but the concept as well. The conceptual thinking here is key as this is how we begin to develop models for analysis!

    @sergioh5515@sergioh55153 жыл бұрын
  • "round gravity to 10 as always" haha

    @leonardovillalobos5277@leonardovillalobos52773 жыл бұрын
    • You should check out Sean' Carroll's Biggest Ideas In The Universe. He sets c (speed of light) and h-bar (reduced planck constant) to 1 to simplify the math. It's just the way science and math works best.

      @kindlin@kindlin3 жыл бұрын
    • @@kindlin Will do 😃 thanks!

      @leonardovillalobos5277@leonardovillalobos52773 жыл бұрын
    • @@kindlin not the same thing, rounding g is an approximation, setting the constants to 1 is not because you consider different variables. For example, setting c to 1 could mean that the time you are using afterwards is a different time (where the unit is not one sec). Nothing to do with the approximation of g, in which case you just accept to have slightly different result (or maybe the precision of the other datas you are using is so bad that it would be sensless to use a more precise g)

      @francescocitterio54@francescocitterio543 жыл бұрын
    • @@francescocitterio54 Setting it to 1 or 10 is similar enough. The mathematical reason for doing this is the exact same, to simplify math. 1 is just much simpler. You could set G=1 and do other weird things with the math unrelated to we're talking about here (but similar to what Sean does).

      @kindlin@kindlin3 жыл бұрын
    • Ok

      @ishworshrestha3559@ishworshrestha35593 жыл бұрын
  • @Zach Star Thank you for presenting these awesome real-world applications of differential equations! It really helps to understand how to apply the mathematics that we learn or are going to learn. Please keep the educational and informative videos coming. I really appreciate what you are doing.

    @greggreen5510@greggreen55106 ай бұрын
  • Out of all my math classes. Diff EQ is my favourite. It was fun figuring things out and having it all come together

    @ijt540@ijt5403 жыл бұрын
  • - This was way over my head but I enjoyed how you presented it. The equation for constant change in mass as the shuttle rises instead of Newtons really struck me to how complicated a launch is. 🤔 👍

    @mydogbrian4814@mydogbrian48143 жыл бұрын
  • Great video, I took differential equations as an undergrad pre-requisite to mechanical engineering at UT. We called it 'difficult equations', but made sense when I later got into applications (i.e. state space model diff. eqs.).

    @cattleprods911@cattleprods911 Жыл бұрын
  • Thanks for making me dread this next semester a little bit less haha. Love you’re comedy videos but I think I love the teaching ones even more!

    @nannyd2@nannyd22 жыл бұрын
  • Im in my last Calculus 3 class taking Diff Equations next semester and this looks pretty interesting, I can't wait! Thank you for the vid Zach!

    @eg8charles@eg8charles3 жыл бұрын
    • well....how'd it go...?

      @jasonfarrell00@jasonfarrell00 Жыл бұрын
    • @@jasonfarrell00 I'm in the same boat but I just passed Calc 3 and my Diff Eq starts in 4 weeks

      @MaximusLX@MaximusLX Жыл бұрын
    • @@MaximusLX best of luck to ya! i was outta school for a few years then came back and went right into diff eq lol it was rough. but coming right out of calc 3 should put you in a great spot to do well 👍

      @jasonfarrell00@jasonfarrell00 Жыл бұрын
    • Bruh im doing both in same semester hahaha

      @RomanBellic-ez5fh@RomanBellic-ez5fh4 күн бұрын
  • I feel like if I knew the application of differential equations, I would have enjoyed that course much more. This video makes me want to revisit those concepts. Thanks.

    @patrickrobichaux@patrickrobichaux2 жыл бұрын
    • You just didn’t have the drive

      @jimbojimbo6873@jimbojimbo6873 Жыл бұрын
    • It's no different than other math logic. Y=X+1 for example is a very basic expression. You can instantly explain it since it's so simple. But if you change it so Y=1+dx/dt, then we have a Y which is going to be different in the same system for every sample we take of x in the timeline (see how sneaky it is?). We simply take the two dimensional space and move it across the timeline in order to get a function in time. This is literally all there is to it, but written down in a single line for convenience. You don't want to write a hundred lines for a hundred samples of X now do you... Newton probably got pissed by this exact thing. I'm no Newton and the idea of such a tedium pisses me off.

      @Hr1s7i@Hr1s7i18 күн бұрын
  • Zach, Just brilliant. I am always curious about the implications of the math I am learning. Thanks a lot

    @nnishchit289@nnishchit2892 жыл бұрын
  • Just like how grass is always greener on the other side, everybody likes to say that their education systems are bad etc. But I'm so glad that our state school syllabus (Indian) had a chapter in 12th Maths called "Application of derivatives" and it taught us practical applications of differential equations. It had problems very similar to those shown in the video. Motion of a rocket with time varying mass, filling up of conical containers with time varying radius, maximizing volume of solids for given surface areas, etc. And I must say, that is what really made me fall in love with differential equations. I just laugh at people who say "When am I ever going to use calculus in real life?" Because I know how useful they really are.

    @sampanna6983@sampanna6983 Жыл бұрын
    • What math textbook is that? I’d find it useful to study from.

      @theeviloverlord7168@theeviloverlord71687 ай бұрын
    • @@theeviloverlord7168 HSC 12th: Mathematics and Statistics: Part 2

      @sampanna6983@sampanna69837 ай бұрын
  • It has been many decades since I first learned various methods for solving differential equations, and used them throughout my career as an engineer. I remain impressed about how easy it is to write down a differential equation, as opposed to the difficulty in solving it. Despite advanced methods of numerical analyses, analytical solutions still come down to educated guesswork: intuit a possible solution, plug it into the equation, and find out if it works.

    @greese007@greese007 Жыл бұрын
  • Consider doing a episode on Integral Equations. These seem to get overlooked in the typical "Math Methods" course, but then are used extensively in Graduate Level Physics, "Jackson", etc.

    @douglasstrother6584@douglasstrother65843 жыл бұрын
  • Did my master's thesis on a differential equation, loved your breakdown!

    @Thermolizer@Thermolizer3 жыл бұрын
    • It reminds me of the *_dark water in this video_* kzhead.info/sun/h9Bun6ySqXuQomg/bejne.html&.kqmb

      @justinmiller129@justinmiller1292 жыл бұрын
    • What equation was it about?

      @chrisidema@chrisidema Жыл бұрын
  • For pursuit curves, if you do not know the trajectory of the pursued object/person/variable, you can use a Kalman filter or polynomial regression to predict it, then apply the pursuit algorithm...

    @ronaryel6445@ronaryel64459 ай бұрын
  • I just finished algebra ii, and yet I still completely understand the first ten minutes (except for some of the math around 8 minutes) of the video. So brilliantly explained! Thanks.

    @holdenfees6979@holdenfees69793 жыл бұрын
  • Former engineer, now a nurse, no matter how much I gorge my brain on new medical terminology, biology and pharmacology, I always find myself coming back to the topic of STEM. I wish I could go back to engineering but the jobs just aren’t there, everyone only wants to hire for short term projects.

    @Lemurai@Lemurai2 жыл бұрын
    • Do you think about Medical Dosimetrist or Nuclear Medicine Tech…good money and you applied math and physics….

      @kevinng1702@kevinng1702 Жыл бұрын
    • What country do you live in?

      @BirdTurdMemes@BirdTurdMemes11 ай бұрын
  • I wish i had a maths teacher like him Instead of just blindly solving the equations by formula, we know how to imagine & understand

    @coderide@coderide Жыл бұрын
  • I am just gonna start teaching professionally and this is pure gold to make students interested. Thank you so much.

    @nirmolmunvar6939@nirmolmunvar69393 жыл бұрын
  • Great video! it's always nice to see real world applications for DEq. I believe that's when the "ah ha" moment happens. The chain with the barbell equation was one i used when i worked at the U of Tampa Human Performance Lab.

    @theguerrillachemist4232@theguerrillachemist42322 жыл бұрын
  • I consider Differential eqn as a branch of mathematics (actually Calculus) which are very intresting and very helpful in every day life.Btw thx for this video! Good luck!

    @PhysicsBro-xb8qx@PhysicsBro-xb8qx3 жыл бұрын
    • Why you don't see this kzhead.info/sun/hbuzZ5yvh3-beJ8/bejne.html

      @mr.knight8967@mr.knight89673 жыл бұрын
  • Mann I was just solving differential equations when this video popped up!

    @strikar5552@strikar55523 жыл бұрын
    • Liar.

      @JohnVKaravitis@JohnVKaravitis3 жыл бұрын
    • It reminds me of the *_dark water in this video_* kzhead.info/sun/h9Bun6ySqXuQomg/bejne.html&.mkqj

      @justinmiller129@justinmiller1292 жыл бұрын
  • You have a teaching gift, thanks for putting this together. Subbed.

    @kerbonight3806@kerbonight38063 жыл бұрын
  • I guess one brilliant description for this amazing teaching/explanation is BRILLIANT!

    @asniceful@asniceful2 жыл бұрын
  • During my time at school... Something which you can't perform outright seemed boring...but now watching yt videos getting context of what is the actual application of these equation is really fascinating...Applications were there in the textbooks but we're not at all relatable as those were some mumbo jumbo high level experiments...

    @harshvirtomar6552@harshvirtomar6552 Жыл бұрын
  • How do I get girls to like me? Differential equations How do I get this stain out of my pants? Differential equations What happens if I can't solve a differential equation? Try different differential equations That's right folks they do it all. They can slice and they can dice, make your teeth whiter, and your car go faster. and all for the low low... ok im done.

    @whatelseison8970@whatelseison89703 жыл бұрын
    • when u can't solve des that's where python is ur friend.

      @tonynguyen8166@tonynguyen81663 жыл бұрын
    • No opposites-- aren't different, but ops-- face in Egyptian. APS-- Hawaiian for, what's the problem here, etc...

      @paulhetherington3854@paulhetherington38543 жыл бұрын
    • @@azmanmatamin9020 Kinda crazy you should ask that since your name is the same as my ex's cat and she did, that's who. I was also sad when pus pus died. 😿

      @whatelseison8970@whatelseison89703 жыл бұрын
    • Differential equations put a white stain on my pants 😳

      @captainsnake8515@captainsnake85153 жыл бұрын
    • How do I get girls to like me using differential equations?

      @CristianoRonaldo-hk6vz@CristianoRonaldo-hk6vz3 жыл бұрын
  • I was reading about Image segmentation there we have to segment one image to another. And this is the foundation. Amazed!!

    @aaaa8766@aaaa87663 жыл бұрын
  • Thank you for this video. I opted out of calculus in college and always regretted it and this is the first video I’ve found that explains what differentia equations are used for without assuming the viewer already knows a ton of calculus-specific vocabulary. Thanks for helping me understand how they work a little better.

    @sammisomara@sammisomara3 ай бұрын
  • Just finished calc 3 and linear algebra and I can finally understand math that they do in KZhead videos

    @xianzai_ad1928@xianzai_ad1928 Жыл бұрын
  • "I don't care I'm going to economics" Macro & interest growth differential equations(and friends): *"allow us to introduce ourselves"* Edit: highlighted the irony more clearly

    @revimfadli4666@revimfadli46663 жыл бұрын
    • You will still use it economics for various graphs and other stuff like population growth

      @Kevin-cy2dr@Kevin-cy2dr3 жыл бұрын
    • Economics is full of differential equations

      @arnaldo8681@arnaldo86813 жыл бұрын
    • @@arnaldo8681 i know lol, I was parodying the irony of those who take economics because it's 'easy'/'mundane'/'everyone can do it', yet still meet differential equations anyway... Btw, in macro, or micro as well?

      @revimfadli4666@revimfadli46663 жыл бұрын
    • @@revimfadli4666 its mostly in macro, but you can find them in micro as well. In mechanism design, for example, sometimes they show up en.m.wikipedia.org/wiki/Mechanism_design

      @arnaldo8681@arnaldo86813 жыл бұрын
    • @@arnaldo8681 wow thanks!

      @revimfadli4666@revimfadli46663 жыл бұрын
  • Thank you so much, really great video, knowing why you do something is a must to learn something, generations of students have grown up not knowing why they learned something so gave it little effort,

    @smartchip@smartchip3 жыл бұрын
  • Wow! You actually made me excited about differential equations. Great job!!!

    @michaelm1861@michaelm18612 жыл бұрын
  • Differential Equations: *everything* Literally every student: *confused screaming*

    @aaronrashid2075@aaronrashid20753 жыл бұрын
    • See this man kzhead.info/sun/hbuzZ5yvh3-beJ8/bejne.html

      @mr.knight8967@mr.knight89673 жыл бұрын
    • Differential equations are easy enough just wait till you get to partial differential equations

      @mastershooter64@mastershooter643 жыл бұрын
    • @@mastershooter64 complex analysis

      @omshree2448@omshree24483 жыл бұрын
    • @@mastershooter64 wait till you get something that isn't addition and subtraction

      @Asrieloo@Asrieloo2 жыл бұрын
  • Really nice video! Makes me miss teaching DEs... I wish we didn't focus so much on analytic solutions, but elementary is elementary. I wish there was more money in physics based solvers, I would love to find a job where I can build physics-based models like I did back in school...

    @juanbatista6598@juanbatista65983 жыл бұрын
  • man, I love your videos, your voice and your vibe... you are amazing!!

    @belfonsecaa1801@belfonsecaa18013 жыл бұрын
  • Thanks for such a wonderful and awesome set induction about differential equation.

    @ashutoshkumarjha41@ashutoshkumarjha413 жыл бұрын
  • Nobody: Me: I have differential equations test in 2 hours, I think I'll watch this video right now.

    @t.e.fcastle1069@t.e.fcastle10693 жыл бұрын
    • How was it

      @Nylspider@Nylspider3 жыл бұрын
    • Oh, I did it actually pretty good I think, Hamiltonian equations are kind of pretty and easy to handle. Thanks!

      @t.e.fcastle1069@t.e.fcastle10693 жыл бұрын
    • @@t.e.fcastle1069 gj I know how to differentiate but have never done work with differential equations like these :/

      @Nylspider@Nylspider3 жыл бұрын
  • 2:40 OMG I love that show. I wish there were more math related shows

    @donlansdonlans3363@donlansdonlans33633 жыл бұрын
    • It reminds me of the *_dark water in this video_* kzhead.info/sun/h9Bun6ySqXuQomg/bejne.html&.bfsz

      @justinmiller129@justinmiller1292 жыл бұрын
  • Best video i watched this year। Thankyou for such videos, they inspires us towards science since we come to know why we learn all these and where we will be implementing them in future.

    @sakshivamp@sakshivamp Жыл бұрын
  • your efforts are easily visible through your eyes. great work

    @mitejmadan8672@mitejmadan86723 жыл бұрын
  • Zach star and 3B1B . Perfect!

    @hamza_ME_@hamza_ME_3 жыл бұрын
    • See this man kzhead.info/sun/hbuzZ5yvh3-beJ8/bejne.html

      @mr.knight8967@mr.knight89673 жыл бұрын
    • It reminds me of the *_dark water in this video_* kzhead.info/sun/h9Bun6ySqXuQomg/bejne.html&.qjho

      @justinmiller129@justinmiller1292 жыл бұрын
  • I got a B+ in differential equations this semester. It was super easy, I really enjoyed it!

    @DogeChow91@DogeChow91 Жыл бұрын
  • Fascinating video. Thanks for your hard work!

    @tommyhuffman7499@tommyhuffman74993 жыл бұрын
  • Suddenly this came to my recommendation!!! I m a biology lad but your video has increased my interest in maths now!!

    @sanketpatil6711@sanketpatil67113 жыл бұрын
  • Hi zach !Lots of engineering topic are taught without giving any inituation /application. .. I believe step by step you will cover whole engineering course and would be able to create new engineering course 😅 best of Luck. ..greetings from India

    @jaikumar848@jaikumar8483 жыл бұрын
    • Are you preparing for JEE Advance?

      @Stabokb@Stabokb3 жыл бұрын
    • @@Stabokb I am engineering passout of 2015

      @jaikumar848@jaikumar8483 жыл бұрын
    • See this man kzhead.info/sun/hbuzZ5yvh3-beJ8/bejne.html

      @mr.knight8967@mr.knight89673 жыл бұрын
    • jaikumar848 which university did you go ?

      @161BMW@161BMW3 жыл бұрын
    • @@jaikumar848 B.Tech from IIT Madras.you?

      @Stabokb@Stabokb3 жыл бұрын
  • 17:28 , for a moment i thought he said : "If you wanna die" .. he got me excited

    @dhiahassen9414@dhiahassen94143 жыл бұрын
    • Dive lol

      @skellingtonmeteoryballoon@skellingtonmeteoryballoon3 жыл бұрын
    • It reminds me of the *_dark water in this video_* kzhead.info/sun/h9Bun6ySqXuQomg/bejne.html&.vknj

      @justinmiller129@justinmiller1292 жыл бұрын
  • I find it satisfying and scary at the same time. Thinking of the time and energy I have to put in to really understand the concept scares me. Thanks for the video. It was educating and relieving.

    @solomonokon8919@solomonokon89192 жыл бұрын
  • This is what I needed in my whole 12th for intuition . Thanks

    @siddharthsingh7281@siddharthsingh72813 жыл бұрын
  • Haha, Zach you just had to round up gravity. LMAO!

    @enzo_softwareboi18@enzo_softwareboi183 жыл бұрын
    • It's the engineer in him

      @_instanze_@_instanze_3 жыл бұрын
    • Round up? How do you round up from 10? ¯\_(ツ)_/¯

      @popcorn485@popcorn4853 жыл бұрын
    • 👍🏻 I’m perpetuating the engineering joke 😁

      @popcorn485@popcorn4853 жыл бұрын
    • Because 10 has a round in the form of zero

      @pokemonitishere202@pokemonitishere2023 жыл бұрын
    • @@_instanze_ NOOO! In civil engineering: "We don't do that here"

      @seriyooow310@seriyooow3103 жыл бұрын
  • My signals and systems course is like a kick in the face that says "hey man! Heres why you shouldve payed attention in DE!"

    @dallasdominguez2224@dallasdominguez22243 жыл бұрын
  • Amazing! Great job, loved it

    @Filaxsan@Filaxsan3 жыл бұрын
  • Amazingly explained, congrats!

    @xe2ac@xe2ac3 жыл бұрын
  • Up until Calc2, I had been a natural in math. But it stopped clicking sometime around when we were studying integrals, logarithms, and series. The nail in the coffin was the project I chose to try, which was to describe the curve of an archery bow as it was being drawn, relating the bow length, arc, and draw length or something like that. I flunked that project. I've since looked it up and found that I had bitten off more than I could chew because the related math and physics were a bit beyond what I had been studying at the time. But I didn't know that because my teacher didn't preview our project ideas to make sure we were on topic. So that's my advice to any would-be teachers reading. Be proactive with your students, ask them for updates on their semester projects and ask if they need any help. Don't just throw them in the deep end with no support.

    @saeklin@saeklin2 жыл бұрын
  • I learned these a year ago and went through hell to pass the class and I’ve forgotten them all.

    @ranballls@ranballls3 жыл бұрын
    • SAME HAHAHA

      @shainav.2945@shainav.29453 жыл бұрын
    • I learned this a year ago as well, and id Ace any first level calculus test. Your situation should not be normal

      @abdallababikir4473@abdallababikir44733 жыл бұрын
    • @@abdallababikir4473 to be fair i was never really interested in it, and i just studied just enough to pass so 🤷‍♀️🤷‍♀️ it'd be normal

      @shainav.2945@shainav.29453 жыл бұрын
    • It reminds me of the *_dark water in this video_* kzhead.info/sun/h9Bun6ySqXuQomg/bejne.html&.enrv

      @justinmiller129@justinmiller1292 жыл бұрын
  • Interesting presentation. Great explaination. Helps to clear the mind

    @querrythis@querrythis2 жыл бұрын
  • thank you so much. I was about to start differential equation and i needed this. ALSO we have this chapter called pair pf straight line, i cannot relate that at all to any real life situation and even though i have memorized the formulas but i cannot imagine anything at all

    @phenomenalphysics3548@phenomenalphysics35483 жыл бұрын
  • I tried solving my own version of your equation at 2:15, but with the area = the square of the arclength. It got very messy, ended up with a very nonlinear second order diff eq that looks hard to even numerically solve. I wish more diff eq's were easy to solve analytically.

    @nagoshi01@nagoshi013 жыл бұрын
  • Man if I had the same passion watching this video when I barely passed Maths.

    @paritoshbatish9984@paritoshbatish99843 жыл бұрын
    • It reminds me of the *_dark water in this video_* kzhead.info/sun/h9Bun6ySqXuQomg/bejne.html&.miyg

      @justinmiller129@justinmiller1292 жыл бұрын
  • OMG The pursuit curves were freaking awesome!

    @arielfuxman8868@arielfuxman88683 жыл бұрын
  • awesome! I like the applications, gives me a sense of all that what's happening with diff. eqs.

    @jollyjokress3852@jollyjokress38522 жыл бұрын
  • what is the dot product of velocity and position vectors?

    @malharbhende9019@malharbhende9019 Жыл бұрын
  • Universe: BOOM! Here's a bunch of stuff. Us: Cool, how's it all work? Universe: BOOM! Here's Differential equations. Me: Cool, solve mine too.

    @yodajimmy2574@yodajimmy25743 жыл бұрын
    • See here man kzhead.info/sun/hbuzZ5yvh3-beJ8/bejne.html

      @mr.knight8967@mr.knight89673 жыл бұрын
    • It reminds me of the *_dark water in this video_* kzhead.info/sun/h9Bun6ySqXuQomg/bejne.html&.svjx

      @justinmiller129@justinmiller1292 жыл бұрын
  • I love how the description of the linear equation at the beginning is like 'oh here, something out of your life you can relate to.' and the description of the differential equation is like 'here, some math words.' Love the video. :D

    @ecsodikas@ecsodikas2 жыл бұрын
  • I wish I had KZhead when I was studying aeronautical engineering in the late 1988 to 1992. Compared to my university lecturers, Zach Star makes a differential equation look very simple

    @sulaak@sulaak6 ай бұрын
  • Respect Sir Isaac Newton

    @damapautu6828@damapautu68282 жыл бұрын
  • At 1:46 meaning of the differetial equation was unexpected! ! Thanks for that!!

    @PANKAJKUMAR-nq1qr@PANKAJKUMAR-nq1qr3 жыл бұрын
  • This video brought back old fond memories to me... I was good at mathematics, really good. But took a different path. Still miss it.

    @islamalobeidi5218@islamalobeidi5218 Жыл бұрын
  • Thanks so much. Just an interesting updates that while previously we could only do differentiations in whole numbers, fractional calculus started possibly … “power law is only first order of approximation”, …{ Atangana if replacing the used-to-be Mittag } (ref. Newscientist: “between numbers”)

    @rheung3@rheung3 Жыл бұрын
  • This far too detailed and advanced for my secondary school brain

    @yagzsaidoglu3768@yagzsaidoglu37683 жыл бұрын
  • I got into this stuff to do fluid simulations in my computer graphics courses. This video is very informative as far as the applications go. For sure made by an engineer ahaha

    @pianochannel100@pianochannel1003 жыл бұрын
  • i saw this at the end of my requirements list after calc 3 and wondered what could be more difficult than calc 3... thank you for scaring me.

    @Alex-ox9bj@Alex-ox9bj3 жыл бұрын
  • Thanks for the Video, great job

    @sureshscribnar@sureshscribnar2 жыл бұрын
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