Question

How do you find the derivative of the inverse of `y = 4x + 2x`?

Answer 1

Assuming that the question wants the derivative of the inverse function `f^-1` if `f(x) = 4x+2x`, the answer is `1/6`

Explanation:

`f(x) = 4x+2x = 6x`, so `f^-1(x) = 1/6 x`.

`d/dx(1/6 x) = 1/6`