Question: Find all points on the graph of the function f(x) = 2 sin(x) + (sin(x))2 at which the tangent line is horizontal. Consider the domain x = [0,2π).(adsbygoogle = window.adsbygoogle || []).push({});

f'(x)=2cos x+2sinxcosx...i think

No idea where to go after this...

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# Homework Help: Find the points on a horizontal line

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