The function is
.
The differential equation is
.
Verify the differential equation
correspond to the function
.
Consider
.

Diferentite with respect to
.




.
Hence the differential equation
is a solution of
.
Verify the initial condition
correspond to the function
.
Consider
.
Substitute
in the above equation.




Hence the initial condition
is a solution of
.
The differential equation
is a solution of
.
The initial condition
is a solution of
.