(a)

The functions are and .

Draw a coordinate plane.

Graph the function .

Graph :

Observe the graph of the function :

At , the functional value is .

At , the functional value is .

At , the functional value is .

At , the functional value is .

At , the functional value is .

At , the functional value is .

At , the functional value is .

Draw a coordinate plane.

Graph the function .

Graph :

Observe the graph of the function :

At , the functional value is .

At , the functional value is .

At , the functional value is .

At , the functional value is .

At , the functional value is .

At , the functional value is .

At , the functional value is .

The completed table is :

(b)

Observe the above table of values :

The functions and have same functional values.

Thus, the functions are equal.

(a)

The completed table is :

(b)

The functions and are equal.