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OpenStudy (anonymous):
Find the derivative of f(x) = -12x2 + 9x at x = 6.
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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
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OpenStudy (anonymous):
oh i see what i did wrong, ok cool thanks
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