Professor Dave deserves our tuition fee. I'm learning effectively to him rather than university professors tbh
@abiyyuyandra1065
2 жыл бұрын
yeah bro
@CHEFWILLAY
Жыл бұрын
this is still true btw
@objectoriented3049
Жыл бұрын
Zip up his pants when you're done lil bro
@arthurngosa5926
Жыл бұрын
@@CHEFWILLAY for real no cap
@user-jx8jp5kh6g
Жыл бұрын
Hi Professor Dave... Thank you very much for this video, kindly assist me on when exactly do we need to draw that right angled triangle ??😮 Is it always when we have the trig substitution or ?
@lanepotts1046
Жыл бұрын
Dude this is the hardest thing I’ve done in my life thanks for making it a little easier
@emmacatte
6 жыл бұрын
Professor Dave has carried me through Ochem and now Calc 2. If only he did microbio
@ProfessorDaveExplains
6 жыл бұрын
well i did biology and biochemistry, did you see those? microbiology will be coming soon, maybe early next year!
@melester2728
3 жыл бұрын
@@ProfessorDaveExplains 🔭 ASTRONOMY
@happyjohn1656
2 жыл бұрын
@@melester2728 🔭 ASTRONOMY 2:45 AM (yep!) 2/15/2022
No matter how hard the topic is, his intro makes it all look good!!
@gekkouga2828
4 жыл бұрын
Thanks, Professor Dave, for giving a base in doing integration! I am now confident to work out any integration problem.
@bifengxiao9300
3 жыл бұрын
This is just awesome. Every single time I felt confused in my college calculus lectures, I come to this channel!! Thanks for making math seem fun and understandable!!
@dakshbadal7522
3 жыл бұрын
If you want him to earn money but can't afford patreon, just watch the whole of the skippable ad.
@albabelen5628
2 жыл бұрын
did the last exersise perfectly! Honestly, I thought I'd write some short resume I wouldn't fully understand with this video. I ended up writing a whole page with every example and in-betweens you did. I don't regret it, because I understood everything, and I won't struggle to remember it. Thank you so much for your easy explanations! You make integration seem so much easier!
@eyoelgashaw5089
3 жыл бұрын
you're a living legend you know that!! my professor tried his best but not enough. If only Feynman was here to see ur tutoring skills. Also i am deeply waiting for your ODE and PDEs in addition to any programming languages. i want to see you in Khan Academy level. having ur own website and all.
@aaronzai
2 жыл бұрын
Wow, didn't know cal2 could be that simple. Thanks for your magic!
@shahrukhqaiser1745
6 жыл бұрын
(Cos theta / sin² theta) = cot theta/ sin theta =cot theta cosec theta Could have used that too. Thanks for the video. Great explaining. 👍
@junisaresilvosa9430
2 жыл бұрын
my online class proffesor only reads his presentation and doesn't it that much. Proffesor Dave you really helps me.
@jethior
7 ай бұрын
oh my God! it takes me only 15 min to understand what our lecturer hasn't explained efficiently for one year. even here on KZitem except yours. thanks a lot my mentor!!
@leobergmiller873
6 жыл бұрын
PROFESSOR DAVE YOU ARE MY HERO PLEASE POST THE REST OF YOUR CALCULUS VIDEOS TONIGHT I HAVE THE AP CALCULUS BC EXAM TOMORROW
@emilyhenegar7320
6 жыл бұрын
Leo Bergmiller Please Professor Dave. Any more material you could release would save me on the exam tomorrow
@POPFARRT
2 ай бұрын
I watched 3 people try to teach these 3 concepts, what you did differently is explain the trig substitution's and identity's. I also like how you did not go to the next step, without mentioning exactly what you did(even if it was small) . Also starting off small before performing a problem Great work.
@Elitea20
3 жыл бұрын
Professor Dave really knows everything
@fabianousim6716
2 жыл бұрын
just realized the same thing lmao
@reginalorenorcena7131
3 жыл бұрын
Thank you so much Professor Dave😍! This is a big help to my exam.
@RadoHudran
2 жыл бұрын
One small correction at 12:00 cos θ/sin^2 θ is equal to cot θ . csc θ which can be directly integrated to -csc θ + C instead of the u substitution
@wisegamer706
Жыл бұрын
Not a correction. Just another way of doing it.
@knowledgeboy6137
4 жыл бұрын
i thought this is very hard you prove me wrong thank you Professor
@jasonb.6623
Жыл бұрын
I wish this video had been around when I took Calc II in 2002 ... this makes so much more sense.
@user-ix7jy5pe1e
6 ай бұрын
This is really great thank prof DAVE
@shrujalagrawal3743
5 жыл бұрын
YOU MADE MY LIFE MUCH EASIER. THANKYOU SO MUCH. PLEASE MAKE VIDEOS ON ALL THE CHAPTERS FROM MATHS HL IB :D
@thomascarter8833
11 ай бұрын
This video is amazing, I love how slowly and clearly you explain!
@TitaniumSporks.
2 жыл бұрын
My gosh thank you so much for this video. It really made this topic click for me (for the most part, still struggling with back substitution, but I think that's due to how long it's been since I initially learned trig identities)
@gamerprimeultimaxsupreme2776
4 жыл бұрын
Thank you so much for this. This video has made trig subs a lot more understandable.
@mechikaboombayah4960
6 жыл бұрын
You explain so nicely!!!!! #RespectToProfessorDave #FromIndia
@bubblesxo
6 жыл бұрын
thank you so much! your videos are really helpful love the visuals and how everything is taught in a concise matter under 20 minutes. i am looking forward to using your videos to tackle on organic chem this school year :)
@potatomudkip
3 жыл бұрын
had to watch the video twice but i understand it a lot better now
@franzjarvybaconawa1082
11 ай бұрын
Those tips helped me understand trig sub a lot more than before
@BobbyC-be9vy
2 жыл бұрын
Very clear and methodical explanation. Just wish he’d use arcsin to denote inverse sine.
thank you so much< i was literally looking for this explanations for so long. so happy you made this video
@user-lg2dx6zb9j
4 ай бұрын
this made the most confusing thing I've ever done slightly less confusing, every time you help
@johnholme783
Жыл бұрын
Crystal clear! Thank you!
@jkgan4952
Жыл бұрын
Yo this is kinda cool. I found out that trig substitution is basically u substitution in reverse. Instead of finding the integral of f(x)dx, we find the integral of f(g(x))g'(x)dx. This integral is going to be F(g(x))+c. And if we resub x back for g(x), we get F(x)+c. Pretty neat technique!
@IbrahimAkar-pi1fu
4 ай бұрын
this is the best class i've seen.
@SAL404w
6 ай бұрын
This an insanely good way to teach a hard subject, G professor
@mosshead_vinsmoke
4 ай бұрын
I skipped all my cal-1 and anything related to trig's during my highschool and here i am in clg taking maths & computing as major , ive delved in many2 videos and channels and i think your videos are always the best in explaining things and why/how we tackle them down Thank you for this amazing Channel and lectures
@nerd2544
3 ай бұрын
another computerfield + math 🔥 i didnt skip but just forgot high school calc
@kiraivanova1342
9 ай бұрын
This is so good. thank you!
@Minespidur
5 жыл бұрын
Thanks so much for the videos! You should make content on multivariable calc!
@ProfessorDaveExplains
5 жыл бұрын
i did that! keep going through the series.
@mryup6100
4 жыл бұрын
This guy is amazing!!! 💯
@mr.madlad1210
4 жыл бұрын
Thank you for this.
@EvilSandwich
2 жыл бұрын
Can we just have a round of applause for the poor overworked mathematician that figured out this trig subbing mess centuries ago from scratch with NO help, so we didn't have to?
@curtpiazza1688
3 жыл бұрын
Thanx Prof. Dave! I wish I had you for calc.!
@reginalorenorcena7131
3 жыл бұрын
Thank so much Professor Dave😍! This is a big help to my exam in Calculus 2💗
@andrewgarcia9976
Жыл бұрын
Professor Dave, do you have some sort of pdf version of this whole series that can be quickly referenced? I would seriously pay money for it
@ProfessorDaveExplains
Жыл бұрын
I do not but I had thought of that before, maybe some day!
@crismiranda9188
4 жыл бұрын
Will have a quiz in a few hours thank you for your help!
@janmarcusteves725
4 ай бұрын
Bro this did clarify everything, tysm
@dana-ff9cf
10 ай бұрын
this is so helpful thank you so much. wish I knew this channel before
@pluto4301
3 жыл бұрын
This professor saves my grade every time
@curtpiazza1688
2 жыл бұрын
Brilliant concise explanation!
@Jake-uo3ne
3 ай бұрын
If √9-x² was a denominator, what would be the first step to solve it?
@dwarf2125
Жыл бұрын
U made it so easy bro appreciate it
@user-yg97f5hfvh
5 жыл бұрын
You might sub x=acos(theta), x=acot(theta), x=acsc(theta)
@marcushendriksen8415
5 жыл бұрын
Your videos have criminally few views, it makes me sad :(
@ProfessorDaveExplains
5 жыл бұрын
pretty please tell your friends about the channel!
@marcushendriksen8415
5 жыл бұрын
@@ProfessorDaveExplains Oh I have, but I'll certainly continue to spread the gospel!
@Salamanca-joro
5 ай бұрын
Dude no way you made everthing this simple
@ijazulhaq6078
4 жыл бұрын
on 7 12 how 1 is change to teta in csc*2 Q -1
@krishgoogol8653
2 жыл бұрын
Thanku so much sir🙏🙏
@silentintegrals9104
2 жыл бұрын
totally agree!
@naseralhamwai7627
3 жыл бұрын
Why did you not take the absolute value of tan& , tan& is different in this case since. -pi/2
@sondosnagib6808
3 жыл бұрын
Ditching my college prof and joining the prof dave army✊🏻
@yamkelabalisa7330
5 жыл бұрын
but why \int \:x^3\sqrt{x^2-1}dx is not working?
@adityaadit2004
4 жыл бұрын
Can I choose x = a cos O for sqrt(a^2 - x^2) instead of x = a sin O ?
@siausoonhong6905
2 жыл бұрын
Best Ever
@kashifhussains2951
3 жыл бұрын
May u have all the happiness and peace in ur life💙
@user-hn1sw6nf6s
4 жыл бұрын
Thanks 🙏🏻 .
@nirupamam2814
4 жыл бұрын
You're a doctor.. because you vanished my tension about this calcus
@freyappari
6 ай бұрын
Thank you brotherrrr
@dessy8634
5 жыл бұрын
I am from Ghana you are the matrix of calculus
@Localpref416
6 ай бұрын
How do you get the 1 for a^2 - a^2 sin^2(x) = a^2(1-sin^2(x)). How does that simplify at all?
@sactornogaming
6 ай бұрын
You factor out a^2
@topapo3661
6 ай бұрын
1-sin^2(x)=cos^2(x), so it becomes a^2 cos^2(x), whose square root is a cos(x)
@khloetran69
4 жыл бұрын
Awesome video thanks a lot
@jds189
4 жыл бұрын
brain hurty
@kevinkelly6492
4 жыл бұрын
lmao same
@aashsyed1277
3 жыл бұрын
0:46 5 actually
@JesusMartinez-zu3xl
2 жыл бұрын
I actually understand this! thank you
@AceOfHearts001
Жыл бұрын
Brilliant, thank you
@manpierre571
Жыл бұрын
you are the master professor....I have to pay the fees for sure 😆
@user-jz8kn6tl6i
2 ай бұрын
Dear Proffessor cant we use x = acosθ instead of asinθ?
@AV4Life
2 ай бұрын
Technically you can, but you’d have an unnecessary negative sign to deal with. It’s better to use sin.
@starrk_sama
3 ай бұрын
I hate engineering lmao
@friedhegg8874
8 күн бұрын
Then don’t try and be an engineer lol
@joshuareyes1560
3 жыл бұрын
I thought I worked out the last problem wrong as everything cancelled, but I'm glad I did it right xD Great video! Saved me for sure.
@shaheenbean
2 жыл бұрын
At 8:40, is it a coincidence that "a" on the right triangle was equal to the numerator in the original problem, or is there an actual connection?
@yerushaleyim3655
5 жыл бұрын
Thank u..
@dilanurkok5316
3 жыл бұрын
You are great. I am appreciated. Thank you :))))
@zzzzzzzjsjyue2175
2 жыл бұрын
best vid ive seen on this
@Thee_Contented
2 жыл бұрын
Very educational indeed
@unusualfrog779
3 жыл бұрын
where does the tan in the denominator in the comprehension question come from?
@TheSkilledTroll10
4 жыл бұрын
Do you have integration by partial fractions
@neo8352
5 жыл бұрын
2:18 Why that(cos theta)has to be absolute value?
@RazorM97
5 жыл бұрын
0:55 "a can be any positive number", and x or the theta from the cosine could have been negative
@aryanchauhan113
Жыл бұрын
THNKS REALLY HELPFULLLLL
@vix2740
Жыл бұрын
6:17 why do we bring theta up into the solution of dx/dt
@aashsyed1277
3 жыл бұрын
Ill give you 1 million dollars for this. Thanks.
@platysmemes7663
Жыл бұрын
thanks!!
@maimomirabel2685
2 жыл бұрын
I have a worry here the numerator has 9 and x^2 substituting x from the original function was thinking u will just substitute in the given function as it is
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