1.

The continuous time convolution integral y(t) = e-3tu(t) * u(t+3) is ___________

A. ( frac{1}{3} )[1 e<sup>-3(t+3)</sup>] u(t+3)
B. ( frac{1}{3} )[1 e<sup>-3(t+3)</sup>] u(t)
C. ( frac{1}{3} )[1 e<sup>-3t</sup>] u(t)
D. ( frac{1}{3} )[1 e<sup>-3t</sup>] u(t+3)
Answer» B. ( frac{1}{3} )[1 e<sup>-3(t+3)</sup>] u(t)


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