$\"\"$

The differential equation is $\"\"$ .

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

$\"\"$

Find the $\"\"$ value.

The equation is $\"\"$ .

The initial condition is $\"\"$ .

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

$\"\"$

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

$\"\"$ . $\"\"$

$\"\"$ .