Step 1:

The differential equation is $\"\"$ , where $\"\"$ .

Rewrite the differential equation.

$\"\"$

Apply integration on each side.

$\"\"$

Using integration by parts : $\"\"$

$\"\"$

Substitute $\"\"$ in above expression.

$\"\"$

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

$\"\"$

Solution :

The solution of the differential equation is $\"\"$ .