Professor needs to get an award for these videos.

Wanted to let you know high school students in Jordan who are studying math for the national exams watch your videos. Best professor!

You teach me more in 10 minutes than my trig teacher does in an hour and a half

i FINALLY understand this!!!!! jeeze. nobody explained it as simply as you did, they just showed the problem and i couldnt follow. ty, ty, ty!!

this is so much more understandable than at my pre-algebra class at school. we rush through everything, then move on to the next lesson without understanding the functions like this. Thank you so much! You're even better than the tutors at school as well.

Lol thanks for clearing the "fog"

Big shoutout to you, sir! I am absolutely cramming right now but now I'm cramming with dignity

Professor, you have such a talent to simplify math topics.  You are a God send, thank you for your videos!

professor Leornard for the win <3

I am reviewing this video because I am taking Calculus, got to the “Chain Rule” and just blanked out. I did not know what a composition function was. I went through 7 tutors and the final one had good insight, “There is a difference between an Algebra problem, and a Calculus problem” with respect to why you are not understanding something. Turns out, my problem wasn’t Calculus, it was Algebra. funny, in that I had the exact same problem with “f(x) and f(x+h)”. Who helped me solve that? Super Leonard.  I come back for a similar problem … same solution.  I know you probably joke about “Blank Spaces” but I cannot properly explain how critical this explanation has been in my understanding of mathematics.  Thank you very much good sir, and I hope that you have a good one.

You explained this so well with the "blank space" I was struggling, thank you !!

Got perfect score on my quiz. You're my superhero!

I can not thank you enough. I really love and respect this man

Thank you for breaking this down and going slow . Finally I get it !!

Sir i cant thank you enough

Dear professor please do a series on linear algebra. Thanks again for all that you do#GOATprofessor

You are so awesome. I am a newbie math teacher from China. Your video gave me a lot inspiration during my preparation on my class. Thanks a lot again!

Love how you explain each steps, really helps me understand the subject!

Professor, I can't thank you enough, your videos are the best

thanks in advance, your videos always help, I don't even need to watch it to be sure of myself.