The differential equation is
.
Rewrite the differential equation as 
The equation is in the form of first order differential equation
.
and
.
Solution of first order linear differential equation
is
.
Find
.

.
The solution of differential equation is
.
Substitute
.

Consider
.
Evaluate the integral using parts of integration:.
.
Consider
and
.

.


.
Substitute the corresponding value in
.

. \ \
Substitute
in
.


.
.