what it the derivative of using rules

Is it as easy as ?

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- Oct 13th 2011, 06:04 PMdelgeezeetrig derivative
what it the derivative of using rules

Is it as easy as ? - Oct 13th 2011, 06:09 PMskeeterRe: trig derivative
- Oct 13th 2011, 06:11 PMpickslidesRe: trig derivative
You need to use the chain rule here

Find

Let's make and

So and

By the chain rule

Can you finish it? - Oct 13th 2011, 06:13 PMesander4Re: trig derivative
Chain rule. 3(cosx)^2(-sinx)

- Oct 13th 2011, 06:22 PMdelgeezeeRe: trig derivative
Thanks, I understand now.