The chain rule helps us find the derivative of a composite function. For the formula, g’(x) would be the chain.
Example:
We use the general rule power when finding the derivative of a function that is raised to the nth power. In the formula given, f’(x) is the chain.
Example:
Find:
(a) The derivative of the inverse function at x=a
(b) The equation of the tangent line to the inverse function at the point x=a
Using the function f(x)=5-2x3 , a=7