(a)

The functions are  and .

Find .

Definition of composite  function : .

To find , substitute  in the function .

To find , substitute  in the function .

.

(b)

Find .

To find , substitute  in the function .

To find , substitute  in the function .

.

(c)

Find .

To find , substitute  in the function .

To find , substitute  in the function .

.

(d)

Find .

To find , substitute  in the function .

To find , substitute  in the function .

.

(a) .

(b) .

(c) .

(d) .