GATE ECE 2012 | Question: 11

Question

The unilateral Laplace transform of $f(t)$ is $\frac{1}{s^2+s+1}$. The unilateral Laplace transform of $tf(t)$ is

• A. $-\frac{s}{(s^2+s+1)^2}$
• B. $-\frac{2s+1}{(s^2+s+1)^2}$
• C. $\frac{s}{(s^2+s+1)^2}$
• D. $\frac{2s+1}{(s^2+s+1)^2}$