$\"\"$

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

(a).

$\"\"$ .

Apply derivative with respect to $\"\"$ .

$\"\"$ .

1.Draw the coordinate plane.

2.Graph the function $\"\"$ .

Graph :

$\"\"$

(b).

$\"\"$ .

The graph approcaches of that of a horizantal line.

$\"\"$

(c).

Observe the graph $\"\"$ ,which has Horizantal asymptote at $\"\"$ .

$\"\"$

(a).

Graph :

$\"\"$

(b).

$\"\"$ .

(c).

The graph $\"\"$ ,which has Horizantal asymptote at $\"\"$ .