$\"\"$

The function is $\"\"$ .

(1).Draw the coordinate plane.

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

Graph :

$\"\"$

Observe the graph :

The area of the region between the $\"\"$ -axis and the function $\"\"$ in the interval $\"\"$ is $\"\"$ .

$\"\"$

The value best approximates the area of the region between the $\"\"$ -axis and the function is $\"\"$ .