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Mathematics 20 Online
OpenStudy (anonymous):

Find the derivative of f(x) = -12x2 + 9x at x = 6.

OpenStudy (anonymous):

@mebs

OpenStudy (anonymous):

This is too easy for you. Just use the first principle rule. Tell me what you get.\[y = an^{b} , \frac{dy}{dx}= (b) \times (a) n^{b-1}\]

OpenStudy (anonymous):

-135

OpenStudy (anonymous):

correct

OpenStudy (anonymous):

i just did it again and got -108

OpenStudy (anonymous):

oh i see what i did wrong, ok cool thanks

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