For the function f(x) = (x-6)^7/9 find the x-value at which the derivative does not exist.
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Originally Posted by BOOTYBOY For the function f(x) = (x-6)^7/9 find the x-value at which the derivative does not exist. $\displaystyle f'(x)=\frac{7}{9(x-6)^{\frac{2}{9}}}$. Now where is that undefined?
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