The functions are and .

Find .

Apply composition of functions formula: .

To find , evaluate , first.

Then use the range as the domain of and evaluate .

or          ()

         ()

is undefined.

                 ()

is undefined.

                 ()

is undefined.

Because and are not in the domain of , is undefined for and and or .

Therefore, .

Find .

Apply composition of functions formula: .

To find , evaluate first. Then use the range as the domain of and evaluate .

or        ()

or           ()

              ()

is undefined.

Because is not in the domain of , is undefined for .

or        ()

Therefore, .

and .