GATE Mechanical 2014 Set 4 | Question: 5

Question

Laplace transform of $\cos(\omega t)$ is $\dfrac{s}{s^2+\omega ^2}$. The Laplace transform of $e^{-2t} \cos(4t)$ is

• A. $\dfrac{s-2}{(s-2)^2+16} \\$
• B. $\dfrac{s+2}{(s-2)^2+16} \\$
• C. $\dfrac{s-2}{(s+2)^2+16} \\$
• D. $\dfrac{s+2}{(s+2)^2+16}$