For each function f below, find f ^-1 , the inverse function of f. Then find the domain of f ^-1, and write it using interval notation.

1. f(x) = x + 3 4
2. f(x) = 5 x2
3. f(x) = ³2x3 +1
4. f(x) = ³4x 7
5. f(x)= 3x+1 / 2x-7
6. f(x) = 9x2 / 5x4

For each pair of functions below: nd f g ; nd g f ; and use your results to determine whether f and g are inverses of each other.

1.f(x) = 3x4 g(x) = 4x + 3

2.f(x)= 2/3x-6 g(x) =3/2x+9

3.f(x)=2/x g(x) =2/x

4.f(x)= - 3/2x g(x)=3/2x