1.

Given that X(s) is the Laplace transform of the signal cos 2t u (t). The time signal corresponding to (s+1) X(s) is _________________

A. (cos 2t – 2 sin 2t) u (t)
B. (cos 2t + \(\frac{sin⁡2t}{2}\)) u (t)
C. (cos 2t + 2 sin 2t) u (t)
D. (cos 2t – \(\frac{sin⁡2t}{2}\)) u (t)
Answer» B. (cos 2t + \(\frac{sin⁡2t}{2}\)) u (t)


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