You just saved me another panic headache. You explain things so well, even my engineer of a father recommended you over his own explanations. Thanks a lot!
He explains so well in so little time. I love the excercises at the end because it helps me review what you taught and makes me more confident in what I learnt.
my new study method is watching 10min youtube videos before reading my text book. Idk how they do it, but each and every teacher/text book manages to make me super confused and make everything harder than it actually is. Thank you for your service prof Dave!
You can learn all high school, college math within a year by giving yourself a reason to do it for, since the brain is evolved to do certain tasks, for survival and reproduction. Save yourself a lot of time and money by doing AP exams way earlier, screw the norm brother.
Thanks a lot!!! I usually have no problem in maths but for some reason I simply wasn't able to wrap my head around integration by substitution. This really cleared things for me and lifted a huge burden!!
THANK YOU THANK YOU THANK YOU‼️‼️‼️‼️ i cant believe that all of my questions abt the substitution rule have been answered with a short, 10 minute video!!! THANK YOU‼️‼️‼️
Dear Dr. Dave, I would hereby like to submit a humble request for your consideration of the production of an additional calculus video, U-Substitution of Definite Integrals. There's some extra thinking involved, and I would love to see your 5-10 minute take on it. Thanks for all the amazingly helpful content!
You can further simplify -ln|u| + c using the principles of natural logs therefore, it would be ln|u^-1| + c Which is the same as ln|1/u| +c Now substitute cos(x) for u: ln|1/cosx|+c Using trig, we know that 1/cos(x) = sec(x) Hence why the anti derivative of tan(x) = ln|sec(x)| + c
I'm sorry, I know this is said often but... holy cow. This man is up here explaining things that, a year ago, I would have understood about as well as Einstein's Field equations and yet I'm understanding it. The crazy thing is that even though it still sounds nerdy af (which is something I always used to appreciate, but wasn't really able to properly replicate due to a lack of understanding), it's not just going in one ear and out the other. Now I'm not gonna say that it's solely Dave or even just solely RUclips, but between last year and this year I went from failing at properly comprehending Pre-calc class to sucking in information on Calculus and planning on taking an exam to skip taking the first class all together, and I feel like it wouldn't be possible at *_nearly_* the speed it happened without RUclips and Dave more than many. I could even say even Khan Academy hasn't helped as much. Thank you, Professor Dave. I first came here for anti-conspiracy content... but I subbed for this.
Do you have any advice for me learning calculus like in the video? I’m in high school and not doing too well :( . It’s hard for me as I have to juggle many subjects.
What is the video in this series that is where Dave justifies the splitting of dx from d/dx to be able to "multiply" the integrand by dx to get 2x dx = du?
What have I been doing in high school? I didn't learn anything back then. Now, I understand everything. Where were you Professor Dave when I needed you?
I watched a 30 min long video on yt... Not gonna take his name... And I was completely lost I couldn't understand a shit And then i stumbled upon ur video... Seriously everything is easy now... A bad teacher can make u feel dumb.. really Thanks dude for telling me the correct path when I got lost with that random youtuber
Is the point in the substitution rule to simplify the equation? Cause if so i dont really see it it just makes everything more complicated than it already was. Either way, great video 👍👍
Hey so is it possible if you have an extremely long polynomial, that you can use the Subsitution method in two places in the polynomial at once? So if you had like two sets of parenthesis in a long poloynomial, could you substitute one for U and another for Y (random variable), and then do this method for these two different substitutions at the same time?
Professor Dave is the teacher you always wanted but never had. Thank you, Professor Dave. You have saved me multiple times.
I have a great teacher soooo...
+1
You just saved me another panic headache. You explain things so well, even my engineer of a father recommended you over his own explanations. Thanks a lot!
He explains so well in so little time. I love the excercises at the end because it helps me review what you taught and makes me more confident in what I learnt.
There is a simple way to understand science.. Just take your phone/pc --> youtube --> Professor dave explains.. that's all
my new study method is watching 10min youtube videos before reading my text book. Idk how they do it, but each and every teacher/text book manages to make me super confused and make everything harder than it actually is. Thank you for your service prof Dave!
Dude my AP calc exam is tomorrow and no one could explain substitution to me until you, I’m in debt and at your service!
I'm a 12 year old tryna learn calculus and also I'm from the philippines and glad to say,this helped me a lot!
+1 sub for you!
You can learn all high school, college math within a year by giving yourself a reason to do it for, since the brain is evolved to do certain tasks, for survival and reproduction. Save yourself a lot of time and money by doing AP exams way earlier, screw the norm brother.
Damn, respect to you. I'd never be able to understand this at 12.
@@bologna3464 facts lol
saan ka nagaaral?
You're wasting your childhood
Man you're genius. Every problem just make sense.
You're an amazing teacher! Pls keep up with the great work!
Thanks a lot!!! I usually have no problem in maths but for some reason I simply wasn't able to wrap my head around integration by substitution. This really cleared things for me and lifted a huge burden!!
Dave - all I have to say is THANK YOU SO MUCH. This video was extremely helpful in developing my understanding of the substitution rule
I stan this man and will forever thank him for existing i can already feel my calculus 2 grade rising
2:02 this is what i needed to know, the teacher i was watching was explaining it so weirdly.
This actually helped me a lot! Thanks!
ruclips.net/video/SbP3_d15yFc/видео.html
Professor Dave is my gratest teacher ever I have seen.I love your teaching methods
I FINALLY GET IT!!!! I have a test tomorrow morning and substitution was the only thing I couldn't grasp. That passing grade's in the pocket for sure
Thank you so much Dave!!! I got a 100%!!
THANK YOU THANK YOU THANK YOU‼️‼️‼️‼️ i cant believe that all of my questions abt the substitution rule have been answered with a short, 10 minute video!!! THANK YOU‼️‼️‼️
I needed someone to explain this to me like I was a child.
Your way of explanation made things pretty much easier
This guy is genuinely better than organic chemistry tutor. Things are always so clear and straight to the point.
I won’t stand for this Julio slander
truee both are good@@bonelessbooks9263
You are very wicked, organic chemistry tries his best,but you can't appreciate him
The best teacher on RUclips.
gotta love professor Dave, finally understood the concept after a WEEK of working on this!! gotta love him :D
谢谢！
Dear Dr. Dave, I would hereby like to submit a humble request for your consideration of the production of an additional calculus video, U-Substitution of Definite Integrals. There's some extra thinking involved, and I would love to see your 5-10 minute take on it. Thanks for all the amazingly helpful content!
God bless you professor Dave, you are saving lives out here, emotional lives that is
Another best teacher across the world is our respected sir dave. Sir i am from india and still my all my country mates watch ur chnnl to ace science.
You can further simplify -ln|u| + c using the principles of natural logs therefore, it would be ln|u^-1| + c
Which is the same as ln|1/u| +c
Now substitute cos(x) for u: ln|1/cosx|+c
Using trig, we know that 1/cos(x) = sec(x)
Hence why the anti derivative of tan(x) = ln|sec(x)| + c
You saved my life.Thanks that you are born.
I'm sorry, I know this is said often but... holy cow. This man is up here explaining things that, a year ago, I would have understood about as well as Einstein's Field equations and yet I'm understanding it. The crazy thing is that even though it still sounds nerdy af (which is something I always used to appreciate, but wasn't really able to properly replicate due to a lack of understanding), it's not just going in one ear and out the other.
Now I'm not gonna say that it's solely Dave or even just solely RUclips, but between last year and this year I went from failing at properly comprehending Pre-calc class to sucking in information on Calculus and planning on taking an exam to skip taking the first class all together, and I feel like it wouldn't be possible at *_nearly_* the speed it happened without RUclips and Dave more than many. I could even say even Khan Academy hasn't helped as much.
Thank you, Professor Dave. I first came here for anti-conspiracy content... but I subbed for this.
math with this guy is on another level
Sir you don't even know how much of a headache and heartache you saved me from ❤️ 😭
Thank you sir for your dedication and for making this free! 🙏
I finally understand my lesson in calculus. Thank you!
thanks Dave. I am preparing for my final exam for one of the hardest math courses!!! tnx
Finally understand !!! Thank you so much!
Thank you sir for this simple and best explanation on this topic.❤
Thank you professor
Thank you Professor Dave
Thanks a lot! My teacher just put up a formula of it and told us to memorise lol
Who knew that a chemist would be saving my math homework.
Thanks! I came for help with organic chemistry and stayed for the calculus help.
Do you have any advice for me learning calculus like in the video? I’m in high school and not doing too well :( . It’s hard for me as I have to juggle many subjects.
Just start at the beginning of the calculus playlist and work your way through?
ruclips.net/video/SbP3_d15yFc/видео.html
finally a video that explains this well.
Thanks prof. Dave
Thank you Prof Dave!
professor dave explains is so cool
I needed this like 3 years ago
It's not too late to learn now
simple and easy steps to understand thanks Man
Thank you Math Jesus
I'm totally using that smiley face variable on my next exam
Thanks a lot professor ❤❤ love from Bangladesh
Thank you prof. dave!
I watched third time and I took notes.
What is the video in this series that is where Dave justifies the splitting of dx from d/dx to be able to "multiply" the integrand by dx to get 2x dx = du?
Thanks a lot!
He teachers so cool man thanks!!
Thanks a lot sir, after long time of learning I've understood by yuor explanation
Thankyou❤️
Professor Dave, please can you start a series on DIFFERENTIAL EQUATIONS?? Pleeeeaasseee??
What have I been doing in high school? I didn't learn anything back then. Now, I understand everything. Where were you Professor Dave when I needed you?
Thank U, Prof. Dave.
9:43 The answers are in order: ln|x^2+3x| + C and -cos(ln x).
why is there a minus beside the cos?
@@ak_oneoneoneBecause the derivative of cos is negative sin.
@@MarioManiac81 ohh yah that makessenss
an amazing explanation brother
I watched a 30 min long video on yt... Not gonna take his name... And I was completely lost
I couldn't understand a shit
And then i stumbled upon ur video... Seriously everything is easy now... A bad teacher can make u feel dumb.. really
Thanks dude for telling me the correct path when I got lost with that random youtuber
Thanks a lot
Very amazing technique that can be shared to my classmates 🤗
how do you spend your day ?
I'm spending my days this summer self studying in advance for the nxt school year
Thanks very much Prof. Dave!
For helping me to understand it more.
I love you professor Dave
Thank you best professor 🥰
Love From INDIA❤🇮🇳‼️
shoutout sa mga pinoy dito HAHAAHA thank you sir dave!
you are great sir
it is really great
Thank you so much
Thanks sir!
I always go back to this video whenever I can't remember how to do u substitution. It's been almost a year already
thank you sir
8:27 Shouldn't the minus sign become plus for the left part of equation, if we add it to both sides?
you are intelligent thank youuuuu
You are doing a great job...keep it up
Thanks sir
It helped a lot
Is the point in the substitution rule to simplify the equation? Cause if so i dont really see it it just makes everything more complicated than it already was. Either way, great video 👍👍
ruclips.net/video/SbP3_d15yFc/видео.html
Unajua mwanangu // awesome 👌
Thanks a bunch 💐🙏
chain rule in reverse thats just what i thought of right before you said it 4:15
thank you
Thank you!
Thanks a lot brother
It helped me
Professor dave ki jai ho 🙏🙏🙏😇😇🎉🎉
Thank you😊👍
Thank you so much 🥰 that was very helpful 😊
He is simply explaining the hard thing and God bless you.
Thanks
Calculus is life
Thank you sir! :)
3:09 😂😂😂 🙂
Thanks professor, now calculus seems reasonable, greetings from Mexico
Thanks very much.
this is the best way to learn mats
2:15 where did you justified ehy its possible??????????????????????
Hey so is it possible if you have an extremely long polynomial, that you can use the Subsitution method in two places in the polynomial at once? So if you had like two sets of parenthesis in a long poloynomial, could you substitute one for U and another for Y (random variable), and then do this method for these two different substitutions at the same time?