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                            ()

or                         ()

                                    ()

is undefined.

                              ()

is undefined.

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

and , and or , or ,

Therefore, .

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.

and is undefined.