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 is undefined and is undefined.