VIDEOS ON CHAPTER 9
Here is a video which very clearly explains the concept of the derivative as the limit as h approaches zero of the gradient of the secant


Here is another video which goes through the ideas behind Differentiation by First principles very clearly and thoroughly


If you watch this video you will get a deeper understanding of the Chain Rule for Differentiation


This video goes through the Chain Rule using the notation:
dy = dy . du dx du dx 

This video gives goes through a possible Exam question requiring the use of the Chain Rule in an unusual way. Watch the start of the video, then pause it and try to solve the problem yourself before watching the solution


This video clearly explains the Product rule and goes through an example


This video clearly explains the Quotient Rule and even gives a rhyme to remember it


The following videos give you some more examples of differentiation using the three Rules in different combinations. Here is the perfect opportunity for more practice. Pause the video and solve the problem, then press play again to check your solution with the one demonstrated on the video.
This video demonstrates an example where both the Quotient Rule and the Chain Rule must be used.


This video demonstrates an example where both the Product Rule and the Chain Rule must be used.


Here is a Practice Example using the Chain Rule


Here is another Practice Example using the Chain Rule

