Domain of a function is all possible values of .

The range of the function is corresponding values of .

Observe the graph of the function :

Domain is all real numbers.

Range is all real numbers.

(a)

Find .

Observe the graph of the function :

At , the value of the function is .

Thus, .

(b)

Find .

Observe the graph of the function :

At , the value of the function is .

Thus, .

(c)

Find .

Observe the graph of the function :

At , the value of the function is .

Thus, .

(d)

Find .

Observe the graph of the function :

At , the value of the function is .

Thus, .

(a) .

(b) .

(c) .

(d) .