second order linear differential equation and fundamental theorem of calculus part II

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we are given a $2$nd order d.e.

$$y'+4y+5 \int_{0}^x y dx = e^{-x}$$ when $y(0)=0$.

if we take the derivative of both sides we get :

$y''+4y'+5y=-e^{-x} $

we take the reduced equation:

$y''+4y'+5y=0$

and get an auxiliary equation

$D^2+4D+5=0$

from here we can easily get our general solution.

$Y_g(x)= C_1 e^{-2x} \cos (x)+ C_2 e^{-2x} \sin (x)$

we can also solve for a particular solution and it ends up being

$Y_p(x)=\frac{1}{2} e^{-x}$

now we are asked for a unique solution. However, we only have $y(0)=0$, $1 $ initial condition. How would we solve for the second initial condition ?

plug zero into :

$y''(x)+4y'(x)+5 y(x)=-e^{-x}$ ?