Find the derivative of f-1(x) at x=6 if f(x) is defined by f(x) = x3 + x. I found the formula g'(x) = 1 / f'(g(x)), where g(x) = f-1(x). Please explain in detail, because...

Find the derivative of f-1(x) at x=6 if f(x) is defined by f(x) = x3 + x. I found the formula g'(x) = 1 / f'(g(x)), where g(x) = f-1(x). Please explain in detail, because...

Find the derivative of f-1(x) at x=6 if f(x) is defined by f(x) = x3 - x. I found the formula g'(x) = 1 / f'(g(x)), where g(x) = f-1(x). Please explain in detail, because my...

find f'(x): f(x)=tan^-1(x^4)+(tanx^4)^-1+(tan^-1x)^4

please answer, i dont understand how to go about this problem.

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