The Laplace transform of the derivative term $\frac{dy}{dt}$ is $sY(s)$ and the Laplace transform of $y(t)$ is $Y(s)$. The Laplace transform of $x(t)$ is $X(s)$. So, the differential equation in the frequency domain becomes:
\[
2sY(s) + Y(s) = X(s)
\]
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