$\"\"$

(a)

The functions are $\"\"$ and $\"\"$ .

Graph the functions $\"\"$ and $\"\"$ in a same viewing window. $\"\"$

Observe the graph:

The functions $\"\"$ and $\"\"$ are equal.

$\"\"$ .

$\"\"$

(b)

The function is $\"\"$ .

Apply logarithm quotient rule: $\"\"$ .

$\"\"$

Apply logarithm power rule: $\"\"$ .

$\"\"$

$\"\"$ .

$\"\"$

(a)

Graph:

$\"\"$

(b) $\"\"$ .