$\"\"$

The differential equation is $\"\"$ .

The function is $\"\"$ .

Apply derivative on each side.

$\"\"$

$\"\"$

The differential equation is $\"\"$ .

Substitute $\"\"$ .

$\"\"$

$\"\"$ .

$\"\"$

The initial condition is $\"\"$ when $\"\"$ yields.

$\"\"$

Substitute the value in the function $\"\"$ .

$\"\"$ .

Therefore, the particular solution is $\"\"$ .

$\"\"$

The particular solution is $\"\"$ .