$\"\"$

The differential equation is $\"\"$ .

Divide on each side by $\"\"$ .

$\"\"$ .

The above equation is in the form of first order differential equation $\"\"$ .

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

$\"\"$

Integrating factor $\"\"$ .

Solution of first order linear differential equation $\"\"$ is $\"\"$ .

Substitute corresponding values in the above equation.

$\"\"$

Divide on each side by $\"\"$ .

$\"\"$

$\"\"$ .

$\"\"$

$\"\"$ .