The function is $\"\"$ .

Rewrite the equation :

$\"\"$

Determine the values of $\"\"$ for which the curve lies between horizontal lines.

$\"\"$ and $\"\"$ .

Consider $\"\"$ .

Graph :

Graph of the function $\"\"$ :

$\"\"$

Observe the graph.

when $\"\"$ .

$\"\"$ , when $\"\"$ .