$\"\"$

The differential equation is $\"\"$ .

The function is $\"\"$ .

Apply derivative on each side with respect to $\"\"$ .

$\"\"$

Apply product rule of derivatives : $\"\"$ .

$\"\"$

Multiply each side by $\"\"$ .

$\"\"$

Since, $\"\"$ .

$\"\"$

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

$\"\"$

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