In this pencast I use the chain rule to find the derivative of several equations.
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This pencast was intersting – I've never even thought about applying the chain rule to ln or e and this pencast's simple explanation is very direct and easy to follow on how go about doing this.
I have also never thought of applying the chain rule to natural log functions. This was a good pencast because it involved the chain rule in a new application which has occured numerous times since we leaned this rule. The chain rule has proved to be very important in the second half of this course!
I found this one very helpful. I always seem to have a bit of trouble applying the chain rule to certain functions such as sine. Also, I never new that the derivative of e^# is e^#, it is a great rule to know and an easy one to remember.