$\"\"$

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

Observe the graph:

The region is bounded from $\"\"$ to $\"\"$ .

Area of the region bounded by a function $\"\"$ from $\"\"$ to $\"\"$ is $\"\"$ .

$\"\"$

The area of the region is $\"\"$ .

$\"\"$

The area of the region is $\"\"$ .