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Mathematics 10 Online
OpenStudy (anonymous):

Find the x values of all points where the curve y = 5x^3 - 11x^2 - 9x - 6 has a horizontal tangent

OpenStudy (anonymous):

so far I have done factoring and ended up with (3x+1)(5x-9), what do i do next

OpenStudy (shubhamsrg):

for horizontal tangent, set dy/dx =0 and find out the required values of x.

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