The functions are
and
.
The interval is
.
The region bounded by the curves :
\
\
Graphically, the area of the region bounded by the curves
and
is
.
\
The centroid is
.
.
Substitute
,
and
in above equation.

Integration by parts :
\Solve the integral by using parts of integration method.
\Formula for integration by parts :
.
Where
and
.
Consider
.
Apply derivative on each side with respect to
.

Consider
.
Apply integral on each side with respect to
.
.
.
Substitute the corresponding values in
.
.


The
-coordinate of the centroid is
.
.
Substitute
,
and
in above equation.
.
.
From power reducing formula :
.

The
-coordinate centroid is
.
The centroid of the region is 
The centroid of the region is 
The graph of the functions
and
with the centeroid 
\