Find f(x) for:

a) F(x)= (8-x^4) all divided by x

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- Feb 20th 2009, 02:49 AMkelly00006Differentiation
Find f(x) for:

a) F(x)= (8-x^4) all divided by x - Feb 20th 2009, 03:25 AMHallsofIvy
Either write it as $\displaystyle \frac{8- x^4}{x}$ and use the quotient rule, or write it as $\displaystyle (8- x^4)x^{-1}$ and use the product rule or divide it out to get $\displaystyle 8x^{-1}- x^3$.

Do you know the derivative of $\displaystyle x^n$?