(a)

The functions are .

Find .

\ \

The value of function .

(b)

The functions are .

Find .

. \ \ The value of function .  

(c)

The functions are .

Find .

.

The value of function .

(d)

The functions are .

Find .

.

The value of function .

Since it is a rational function, the denominator should not be the zero.

Thus, the domain is all real numbers of x except x = 2.

(a) .

(b) .

(c) .

(d)

The value of function .

The domain is all real numbers of x except x = 2.