Dude, this literally brought tears to my eyes. I spent the past 12 hours studying this through my professor's notes and the textbook and all other videos and you explained it in 10 mins.

@masterdon187

5 жыл бұрын

*20 mins

@GhostyOcean

5 жыл бұрын

@@masterdon187 whole video is 20 minutes, but the explanation isn't the entire video.

@BradleyCopp

5 жыл бұрын

2* speed for the pros of studying

@lanlanyiyiyi3933

4 жыл бұрын

Exactly the same experience!!!!!!!!!!!!!!!!!

@aga080

4 жыл бұрын

dude...same..what.the.fuck.

"I know this looks sexy, but this is sec(x) times y" haha

@user-en5vj6vr2u

4 жыл бұрын

heyyy sec(x)y ;)

@real_dddf

3 жыл бұрын

@@user-en5vj6vr2u let's get cos(y) together!

@AdityaKumar-gv4dj

4 ай бұрын

sec C 😂

@YusufSuleiman-kk6fu

3 ай бұрын

😅😂​@@AdityaKumar-gv4dj

I always smile around the middle of his videos when I see where its all going.

@blackpenredpen

7 жыл бұрын

NicE!

@frankpyapao6499

2 ай бұрын

Of course

My teacher: We're going to do linear first order DEs. It's OBVIOUS to everyone that you just need to multiply by this (random term he pulls from his butt) to make this work. So just guess the term that works and do it. Blackpenredpen: This is what we're doing and here's why. (Proceeds to actually EXPLAIN why and how he does things.) I'm going to need your videos this entire quarter because my teacher sucks and just assumes what is obvious to him is obvious to everyone.

@aga080

4 жыл бұрын

i cant even begin to tell you how accurate this is. i wish i had known this a month ago.

@itsmesuryat7570

3 жыл бұрын

I'm beginning to suspect that most teachers have no clue as to why the integrating factor is the way it is.

@vinaykumar2030

3 жыл бұрын

and this is how teaching should be done

@jrddvs24

3 жыл бұрын

Welp, this is the story of my life now. I have no clue why, but every word I can feel in my soul. This guy is bizarre, he explains EVERYTHING in an understandable way, since I found this guy I did not even bother looking anywhere else

@tomatrix7525

3 жыл бұрын

They all do that. When you teach something urself and do not understand it all you have to say is it is obvious in order to avoid explaining it which u cannot do.

can we start a gofundme to get this guy a lapel microphone

These videos are really superb. I love how they start with the underlying principles so you end up seeing how things work rather than just memorising a procedure. Thanks very much, blackpedredpen!

@blackpenredpen

6 жыл бұрын

Thank you very much for such the nice comment!! : )

@thefunpolice

7 ай бұрын

Exactly right. Spot on comment.

17:20 "It's so Nice"!- Yes I agree. Your spirit is very refreshing! Like a cold glass of water on a 115F day. Thank you for the videos!

Truly the best explanation of the IF I've seen. Thank you so much. It finally clicks. Woohoo.

@blackpenredpen

6 жыл бұрын

Great to hear! Thanks!!!!

@postnubilaphoebus96

4 жыл бұрын

Blackpenredpen - click for clicks

Man, you should apply for a professor at the Department of Mathematics at the University of Toronto! My prof sucks totally, and the book also sucks. You literally explained as sexy as you could!!!! Thanks a lot, still no idea why I pay 45K for?!

@WA-hq6ls

5 жыл бұрын

yeah, i feel you bro. same shit in ubc

@TheTck90

5 жыл бұрын

Our profs suck too but atleasst I’m only paying around 200 euros a semester to study in Finland :D

@abrahamverbo3855

4 жыл бұрын

You guys are paying?

@ceciliagai79

4 жыл бұрын

same story at NYU, even higher price u wouldn't believe

@parthasur6018

3 жыл бұрын

Unfortunately people are appointed to University teaching positions on the basis of their formal academic credentials (e.g. degrees, research papers published etc.) and NOT on their teaching ability! It is about time this should be corrected. How? After the completion of every course every professor should be graded from the feedback by students of the course. These grades should be recorded and evaluated by the college. Based on these evaluations the professor's academic career should be decided.

Whenever I need to review a calc or leplace question, you always are there to help me out! Seriously you're helping so many of us get through this stuff! Thanks!

YES THANK YOU FOR THIS OMG. Thanks for actually explaining how to identify the product rule!! So many other videos completely skipped that...

@blackpenredpen

7 жыл бұрын

Jazz M you're welcome!

One of the best ways to give an introduction to the first-order linear differential equations. Explaining why we do, what we do.

This vid is probably among the most deserving of a subscribe I've ever seen dude. You are awesome!!!

@blackpenredpen

6 жыл бұрын

Fallout Nick thank you!!

A superb explanation of a lovely technique. It was so good that I paused the video and derived the integration factor from matching terms with the product rule and then, paused again and solved the example DE which, from inspection, was really just cos(x)^2 + sin(x)^2 = 1 disguised in the form of an ODE. To be fair, I studied calculus at uni to third year between 2005-2008, covering methods in solving ODEs and PDEs, but I'd completely forgotten in the interim just how this integrating factor was obtained and to what forms of ODE it could be applied. The way you explained it could scarcely be better and I say that having had several outstanding university lecturers. Thank you so much for twenty minutes of pure entertainment and joy. You are an internet treasure.

OMG! I have been scrolling through so many videos trying to understand this until i found you! Thank you so much!! Love how passionate you are when teaching! Really inspiring !

I love how excited you get when showing a really beautiful proof. It's subtle but you can rly tell u love it, and this makes learning from you so enjoyable. Keep up the amazing work!

I get really stuck and frustrated doing these problems, so seeing you going through it so seamlessly, is very satisfying to watch! :D Thank you for the video! IT HELPED A TON!!

THANK YOU! I was so confused in class and I think I finally got the hang of it. Thank you for explaining where everything was coming from!

everything I was looking for. Gave theory behind concept, tangible example, not too slow and also not too fast. Perfect!

He literally made math look sec(x)y to me

I have been looking everywhere to figure out how to use the integrating factor as it relates to the product rule. Thank you for this video, it was so helpful!

Thank you! Thank you! Thank you! I have a great Diffe professor, but I missed class the day we went over this, and I've been struggling to figure out why this worked since then! Your explanation was lovely and incredibly easy to follow!

it took you 20 min to explain this concept in simple terms whereas my proff took two days and even then 90 percent of the class was confused! lol. Well done, thank you

blackpenredpen is saving my grade!

@blackpenredpen

6 жыл бұрын

Glad to help!!!!!

Bro, I can't talk about how many hours I have spent trying to figure this out! Just thanks bro, thanks.

@mohsenhca

3 жыл бұрын

If you need brief lectures on ordinary differential equations, check out my youtube channel and personal website at mohsenhamedi.com/Lectures/ODE/LectureODE.html

Excellent job. This topic can be quite perplexing and you laid it out in a clear, concise and, may I say, entertaining manner. Bravo!

Great Explanation Bro! I am currently studying this for my Chemical Engineering degree and this video explained much better than my lecturer.

After searching around for a lot of time, I came across this, and honestly this is the best explanation about IF on KZread. Thank you!

@blackpenredpen

5 жыл бұрын

: )))

FROM THE BOTTOM OF MY HEART, THANK YOU! OMGGG I'VE BEEN SEARCHING THE INTERNET FOR LIKE 3 HOURS TILL THIS ONE VID EXPLAINED IT ALL. THANK YOU MAN GOD BLESS YOU

There is no doubt about the quality of explanation, but the best thing about this video is the joy on your face while you are explaining it. Best of luck & keep doing the good work.

I haven’t even started my senior year of high school yet (in which I will start calculus 1), and even I understand this. You are a great teacher!

Utterly amazing video! You focus on actually understanding the concept rather than memorizing the formula and your way of teaching is so engaging and easy to follow! Thank you so much!

I cannot explain just how much this video helped me. Thank you so much.

You sir are saving lives, your method of explaining complex topics is unmatched.

Hi! I just want to say that you're a great teacher! Im studying calculus at university and my teacher is really bad at explaining how and what he is doing when he shows examples. After the lessons i just watch your videos on the subject, and suddenly everything becomes much clearer. Thank you :)

This is the BEST video on this subject I could find. Thank you. VERY CLEAR!!

This is by far the best explanation I have seen. Thank you.

Thank you very much! Great video and very easy to understand on the way you explained it!

Awesome teacher and the best teacher ever i came across on youtube.... thanks so much, i'm facing this part of linear constant in signals and system

one of the best explanations I have seen. Up there with khan academy. Even made sure i watched all the ads all the way through. Keep up the good work!

wow thank you! im majoring in maths and our prof didnt find it necessary to explain this. your video was extremely helpful!

@blackpenredpen

7 жыл бұрын

My pleasure!

@Animalkingdom.x

2 жыл бұрын

i tell you

thank you so so much! Was learning about this and could not fathom how the product rule was involved. Now I understand it a lot better. Appreciate your work!

I've been searching through all the videos about this topic but finally this one explains it step by step, no matter how easy a step may be. Thank you!!

I have to tell you, I got as far as calculus I, and watching you do this it all made sense, and even jarred loose some forgotten trig as well. Nicely done!!!

Bruh as soon as I'm not a poor college student anymore, I will be donating to your patreon. Dude just saved my life like Asian Jesus over here. You took such an abstract concept and clarified it so well in a practical way. Like even if there are parts that I don't fully understand I know I can still use the method now.

This is a great video. Very well explained and really helped on this topic. Thanks for posting.

Great video, thanks dude! I was stuck on these types of problems for ages but since I watched your video it seems so simple! Keep up the good work :)

amazing way of teaching and approaching the mathematical concepts! Thank you!

well explained - the whole idea is to emphasize the formation of IF and its use in solving linear differential equations - very useful

Wow! For the first time hahaha! Congrats!! I've been looking for you when it comes to uploading Differential Equations!

One of the best videos in this channel. Hands down!

You make me feel like I’m cheating by teaching me easier ways to get the right answer and yet I feel like I’m understanding the concepts more too. That’s a nice combination. Thank you for your help and I hope you’re making a lot of money for it!

Awesome video! You made the whole thing a lot more easier. Thank you so much!

The way you explained how mu(x) can be derived really cleared things up for me. Thanks for the awesome video!!

@Animalkingdom.x

2 жыл бұрын

❤❤

Wow! We just finished diff eq. in my high school Calc class, and they never taught us how to solve non separable equations. This is incredible! Well done

@blackpenredpen

7 жыл бұрын

Will Power thank you. Exact equations will be next!

You had me at product rule...you don't know how that helped linking it back to product rule you're a super star thaaaaank you

This makes so much sense now!!!! I see what you mean about the final "punchline" part with the deriving/integrating (that really confused me at first). So it's like you have your d/dx and the v(x)*y, and to find the derivative, you integrate that piece so it stays as v(x)*y and integrate the right side! And then it's just simplifying to find y. Wowwwwww. This is great. Thank you!

Thank you, after rewatching your video 3 times and taking good notes, I FINALLYYYY get it! Thank you so much!!

Great video...thank you for making it it...it was so much clearer than my textbooks examples of the integrating factor method

It's so clear I don't even have to remember it by heart. Thanks.

Thank you so much! I was having a difficulty understanding this, but after watching this video, I totally understood the idea, and I am amazed. Thank you :)

You kept me sane; today at least! I did not understand my class’s lecture today and you totally saved me

You make this so much more fun and understandable than my professor... thank you

After 2 hours of videos i think this is the best one on the inernett on this topic, thanks man.

Today I got the actual reason of finding the integrating factor..indeed you have deep knowledge n understanding...looking forward for many such videos!

Don't think this can be explained any better, amazing!

I have spent 2 days trying to understand my prof. lecture note like a fool. Thanks so much for the video & Thanks god i found you.

Bro i love you really...i was struggling for a day to understand the proof you only took 5mins to make me understand clearly..god bless your heart bro...lots of love ❤ from India

Thanks for the great video! You explained the concepts so much better than my professor.

That helps a lot. Every time I hear my teacher say "the product rule" I go "aghh this is gonna be painful" but I know the product rule is easy, but I never understand 'how' my teacher get the formulas, for this lesson I guess I know where it all comes from. Thank you so very much. And that sexy joke made my day haha.

For once, I got to know where to get myu(x) and why it's needed. Thank you for a good intro into integrating factor method for solving DE. I was having trouble with memorization, but I can just derive it whenever I happen to forget it

this video has helped me out enormously, thank you so much!

I was struggling with integrating factor.Your video was very helpful for me.You have my heartily gratitude. 🌳🌳🌳

Great explanation! The best one I have seen.

Good job. I took these courses 10+ years ago but I still find myself coming back and watching interesting videos like this.

@blackpenredpen

7 жыл бұрын

JSSTyger thank you.

The thing that makes it so good is the derivation, and intuition before derivation.

Thanks I have been struggling with this lesson and I have an exam in it tomorrow and just save my life 😭❤️❤️❤️❤️

Watched soooo many videos in Differential Eq, until THIS !!! Finally makes sense, Thank you so much !

@blackpenredpen

7 жыл бұрын

My pleasure!

Damn, thank you so much. I really liked seeing the process of how the formula was derived instead of just memorizing it, very cool and interesting

Great work, my professors should definitely take some tips from you.

Thank you for your great teaching! I understand it way better than when my professor taught it!

You explained this so well. I actually understand what's going on now

Undoubtedly best video on this topic. In the other videos they skip alot of concepts that are hard to explain.

Thanks mate. This video is really useful and easy to understand!

Thank you so much!! Your explanation in this video is extremely clear and MUCH MORE helpful than the videos provided by my school. Keep it up and hope to see more videos!!

@mohsenhca

3 жыл бұрын

If you need brief lectures on ordinary differential equations, check out my youtube channel and personal website at mohsenhamedi.com/Lectures/ODE/LectureODE.html

detailed explanation for complex questions! thank you!

Thank you for the video on solving Linear Differential Equations.

Woah, this is so cool and mindblowing, I watched this 1 year ago and forgot it, so I came back :D

2 thumbs up! Thank you for taking the time to explain thoroughly

you have succeeded where my DE professor has failed. thank you a thousand times.

nice job dude you make math so enjoyable

Great video man. Thorough explanation

Yes! Thank you, very clear and easy to understand ( i learned more in that 20mins than 1hr in my lecture) . I look forward to watching your other videos!

@blackpenredpen

7 жыл бұрын

I am very happy to hear! Cheers!

This was an awesome video! I made a video for my students, this is one of those subjects that students seem to get stuck on.

@blackpenredpen

7 жыл бұрын

Thank you! I also checked out your vids and they are very well done!

@habakukmurigi1651

2 жыл бұрын

😂😂😂

The presentation is very helpful for i am getting better understanding of some concepts

This is just brilliant! You saved me a lot of time understanding this concepts. BTW, I love DE.

Great video!! Thanks for explaining the logic behind "Integrating Factor" 😃😃

You are really a life savior man! Thanks a lot.

When he said "this may look sexy but its sec(x)*y" I done near up and lost it

you rock men!!! even in new year you still working. Happy new year. May god bless every step you make, every video, your wise and fun microfone, you family! love ya, peace!!! =]

@blackpenredpen

7 жыл бұрын

THANK YOU! Happy new year to you as well!!!