The functions are and .

Find .

Apply composition of functions formula: .

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

                             ()

is undefined.

                             ()

is undefined.

                             ()

is undefined.

                             ()

is undefined.

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

and .

Therefore is undefined.

Find .

Apply composition of functions formula: .

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

                            ()

is undefined.

                            ()

is undefined.

                            ()

is undefined.

                            ()

is undefined.

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

Therefore is undefined.

The solutions are and is undefined.