# One last question

**Calculus**Level 4

Let's define a differential equation:

\[ \displaystyle \dfrac{d^{2}y}{dx^{2}} - \dfrac{dy}{dx}+y=x\]

with its initial conditions as \(\displaystyle y(1)=1 , y'(1)=0 \) .

If \( \displaystyle y=f(x)\) is the solution of the given \(DE\), evaluate \(\displaystyle f(1.21)\) .