Q. What should be the value of laplace transform for the time-domain signal equation e-at cos ωt.u(t)?- Published on 30 Nov 15a. 1 / s + a with ROC σ > - a
b. ω / (s + a) 2 + ω2 with ROC σ > - a
c. s + a / (s + a)2 + ω2 with ROC σ > - a
d. Aω / s2 + ω2 with ROC σ > 0
ANSWER: s + a / (s + a)2 + ω2 with ROC σ > - a