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OpenStudy (anonymous):
need help with a calculus problem :/ Compute f '(a) algebraically for the given value of a: f(x) = x3 + 2x; a = 9
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OpenStudy (anonymous):
Do you mean using the limit definition?
OpenStudy (anonymous):
its x^3
OpenStudy (anonymous):
f'(x) = 3x^2 + 2. Plug in 9. 3(9)^2 + 2 = 245
OpenStudy (anonymous):
f'(x) = 3x^2 + 2 f'(9) = 3(9)^2 + 2 f'(9) = 245
OpenStudy (anonymous):
thats what i got thanks guys
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