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OpenStudy (anonymous):
find all the points on the graph of the function f(x) = 2sinx + sin^2 x where the tangent line is horizontal
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OpenStudy (anonymous):
first take the derivative... can you calculate the derivative?
OpenStudy (anonymous):
i tried but i got 2cosx + 2cos^2 x probs wrong?
OpenStudy (anonymous):
your derivative is incorrect...
OpenStudy (anonymous):
now since the derivative is factored, we can set it to zero...
OpenStudy (anonymous):
|dw:1338965694449:dw| sorry... now it's correct.
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