Question

Find inverse f^-1(x) of each of these functions, and check by showing that (f o f^-1)(x) = x

A) f(x) = 6x-1

B) f(x) = 7/2x+4

Answer 1

To find the inverse:

Replace f(x) with y
Switch x's and y's, so put x where y is and x where y is.
Solve for y
Replace y with f^-1(x)

Answer 2

This is what I got

Answer 3

Mhm Looking at your first problem, there is a algebra problem.

x = 6y-1
6y= x+1

that's what it should be, not x-1

Answer 4

Thanks

Answer 5

How's the second one looking

Answer 6

Second one is good up to the point where you started to distribute the 1/2.