$\"\"$

\

(a)

\

The function is $\"\"$ .

\

Rewrite the above function as $\"\"$ .

\

Find $\"\"$ .

\

Substitute $\"\"$ in $\"\"$ .

\

$\"\"$

\

$\"\"$

\

Thus, the point on the graph of $\"\"$ is $\"\"$ .

\

$\"\"$

\

(b)

\

The value of the function is $\"\"$ .

\

Rewrite the above function as $\"\"$ .

\

Substitute $\"\"$ in $\"\"$ .

\

$\"\"$

\

Apply one-to-one property of exponential function : $\"\"$ if and only if $\"\"$ .

\

$\"\"$

\

Thus, the point on the graph of $\"\"$ is $\"\"$ . $\"\"$

\

(a) The point on the graph of $\"\"$ is $\"\"$ .

\

(b) The point on the graph of $\"\"$ is $\"\"$ .