Viewed your previous video on calculus and only 1/2-way through this one, but this has already been the most clearly and concisely presented material I’ve watched regarding the subject online. Fundamental concepts are covered that have often otherwise ignored by others. Plan to watch the next and hope to see more. Much thanks for producing this.👆

This is one of the master piece available on youtube. Sir you are great. I am glad i found this channel.  Please keep up the good work in making difficult concepts easier.

Just finished self-studying precalc/trig and now I'm ready to take calc for a spin. After watching this video I've decided to make you my official calc teacher, lol. Learning math to become a better software engineer, but also because I thoroughly enjoy studying it and using it to do cool things.

Everything is adding up from what I didnt understand in class

I learned more about calculus here ..than my entire education

fire intro

I understand the concept but why is the syntax so unnecessarily confusing? f(x) is the y value when x is found. While f prime (x) is the slope? That just throws things completely out of orbit. I finally understood the relationship between x and f(x) and here it just goes completely haywire

💖👌🏻👌🏻

Hey, Dr Ji, great vids to refresh knowledge! I watch it at speed 1.5 )

i love your vid! from ex calc hater

This was very well explained.  Thank you, sir!

You’re the best. Thank you so much.

Thankyou sooo much .....helped me understand calculus easily ....❤

THANK you so much for sharing this, keep making calculus videos plz

Beautiful.  Thanks for sharing

Thank you for your videos!! Always top notch and correct explanations!!

Thank you for your videos

Love you sir....

thank you for your help

Dr Ji, please do more Calc 1 vids, we are at wk 06 of 15 week 5 credit ASU Mat220 Calc 1 course, thank you Sir