Question

i cant recall some theorum about: \[\frac{dy}{dx}=\frac{1}{dx/dy}\]

Answer 1

the derivative of an inverse function yada yada

Answer 2

if f is continuously and differentiable over an interval that contains a point, and the derivative is not zero, then the inverse of the derivative is the derivative of the inverse.

this one?

Answer 3

lol ... if i could remember it then thats prolly the one