Question

How do you find the inverse of a function ? For example to find the inverse of f(x)=9-x, I've done this before but am having a hard time recalling what to do at the moment. Thank you for your time ! :)

Answer 1

well, the property of an inverse is such that:

f(f'(x)) = x

so let x = f'(x)

f(f'(x)) = 9-f'(x)

simplify and solve for f'(x)

Answer 2

Ohhh.... ok I got it, thank you :) @amistre64

Answer 3

good luck :)