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Mathematics 18 Online
OpenStudy (anonymous):

Find the x values of all points where the curve y = 9x^3 - 3x^2 - 5x + 7 has a horizontal tangent I am having troubles with this problem. can someone help? A) x = -5/3, 1/3 B) X = -1/3, -5/9 C) = -1/3, 5/9 D) = -1/3, -5/3

OpenStudy (anonymous):

which part dont you understand?

OpenStudy (anonymous):

i just need to know the 1ST step so i can start it but i am not sure. Would i have to derive it?

OpenStudy (anonymous):

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