Derivative of Trig Function Using Chain Rule

by Matt
(US)

Here's another example of nding the derivative of a composite function using the chain rule, submitted by Matt:



This kind of problem tends to confuse many because it is easy to forget to derive the innermost function inside the sin function. We have:



And here is another interesting one:



This seems daunting, but if you carefully apply the chain rule you'll be okay:



I think I'll leave it there...

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