If you are leaving positive feedback, I thank you very much for your encouragement and for helping me to promote this website. I also welcome your constructive criticism, especially if you are able to point out any errors that I have made (so that I can correct them).
Note that, in the interests of preserving your anonymity, you are not required to submit your e-mail address unless you wish to. However, if you would like a response, please leave your e-mail address and I will ‘get back to you‘ as soon as I can.
Brilliant!!! This helps so much!!! So much easier than anything else I have found. This is now simple.
Thanks again for showing the simple way of doing this. I look forward to the next video!! Absolutely brilliant.
Once again, excellent! I’ve watched many others, that have not helped nearly as much as these. Thanks for making it so easy to understand. When things get complicated, it is easy to make a mistake, but your method of writing down the structure helps to prevent mistakes.
Thanks a million!!! I’ve watched many videos and read tutorials, but still could not get two in a row correct on Khan Academy. Your explanation was so clear and simple that it finally made sense to me and now I can get all of the problems correct!!! Thank you very much.
It all makes total sense now! Thanks very much for all the derivative videos!!! Very helpful.
MemorizeAndLearn (on four different CCM YouTube videos about Differentiation)
See all Testimonials