$\"\"$

The limit function is $\"\"$ .

Definition of the area of the function:

If $\"\"$ is integrable on $\"\"$ , then $\"\"$ , where $\"\"$ .

The limit function is $\"\"$ .

Compare the limit function with area formula.

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

$\"\"$

Substitute $\"\"$ in $\"\"$ .

$\"\"$

The area of the region under the curve $\"\"$ in the interval $\"\"$ .

$\"\"$

The area of the region under the curve $\"\"$ in the interval $\"\"$ .