\ \

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. \ \

Therefore is undefined. \ \

\ \

Find . \ \

Apply composition of functions formula: . \ \

To find , evaluate first. \ \

Then use the range as the domain of and evaluate . \ \

               () \ \

           () \ \

           () \ \

             () \ \

Therefore, . \ \

The solutions are is undefined and .