Step 1:
\The function is
.
Apply derivative on each side with respect to
.

Step 2:
\Verify the differential equation
and initial condition
.
Consider
.
Rewrite the expression.
\
( Since
)

The differential equation
is verified.

Substitute
in above function.

The initial condition
is verified.
Solution :
\The differential equation
is verified.
The initial condition
is verified.
\