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21

Step-by-step Answer
PAGE: 414SET: ExercisesPROBLEM: 21
Please look in your text book for this problem Statement

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.

or               ()

or                    ()

                        ()

is undefined.

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

or , or .

Therefore .

The solutions are is undefined and .



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