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

f(x) = sinxcosx

2. Relevant equations

Product Rule: f(x)g(x) = f(x)Dg(x) + g(x)Df(x)

3. The attempt at a solution

I got to sinx(-sinx) + cosxcosx

The answer is supposed to be 0

Would the next step be turning it into -(sinx)^{2}+ (cosx)^{2}?

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# Homework Help: Derivative of f(x) = sinxcosx

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