(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Derivative of Sin^{2}2x

2. Relevant equations

dy/dx = dy/du * du/dx

y=U^{2}

3. The attempt at a solution

Just want to make sure I am doing this right*.

Do I let U = Sin2x or U = 2x?

Let's say U = Sin2x

y=U^{2}

then y` = 2Sin2x * cos2x?

Or if U = 2x.

y = SinU^{2}

y` = 2cos2x * 2

y` = 4cos2x

am i on the right track with either of these? any help is appreciated! thanks!

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# Derivative of sin^2

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