Calculus - Understanding the derivative of a function at a point

[denconstutube]

Excellent review.  You have taken a very complicated concept and made it very understandable.

[zachphillips]

Thank you bro, things are difficult this year with classes. Videos like this are a huge help

[Sunny-qeel]

Million Thanks for all your efforts. No words can thank you enough. But I've to try.
I studied calculus like 12-15 years ago, I was good at it then (back in the days when the internet was a scarcity). However, I am revising it for my Machine Learning Job now.
Your videos are offering me a great amount of help.

[mwanziesaffa]

I first learned about the derivative years ago, the difference in how I learned it was instead of using the term, 'h' we were taught to use delta X or the change in X.

[khaeyovillaruel]

Clear and succinct! Your videos are incredibly helpful!!! Thank you so much.

[krishnanegikriss]

at 5:18 shouldn't the above point on y axis be f(x+h)?

[rahuldeka]

make video on integration plz plz u are awesome!

[dhatridongre]

How can a change in the function occur at a single point? Can anyone please explain this for me?