The function is and
.
Area of the region :
\If is continuous and non-negative on the closed interval
, then the area of the region bounded by the graph
, the
-axis (
) and the vertical lines
and
is given by
.
Area of the bounded region is .
Consider .
Apply derivative on each side.
\.
Change of integral limits:
\If then
.
If then
.
Substitute and
and change of limits in
.
.
The area of the bounded region is .
The area of the bounded region is .