I want to find the derivative of $f'(x^3)$. I tried using chain rule and I got $3x^2f'(x^3)$. Is that correct?
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$\begingroup$If your function is $g(x)=f'(x^3)$, then it would be by the chain rule $g'(x)=f''(x^3)3x^2$.
Otherwise, if you meant $f(x^3)$, it would be $f'(x)3x^2$.
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