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Mathematics 17 Online
OpenStudy (anonymous):

find all the points on the graph of the function f(x) = 2sinx + sin^2 x where the tangent line is horizontal

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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