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1. |
If x(t) = e-t u(t) and y(t) = e-3tu(t), then y(t) * x(t) will be |
A. | (e-t – e-3t) u(t) |
B. | \(\frac{e^{-3t}-e^{-t}}{2}u(t)\) |
C. | \(\frac{e^{-t}-e^{-3t}}{2}u(t)\) |
D. | \(\frac{e^{-t}+e^{-3t}}{2}u(t)\) |
Answer» D. \(\frac{e^{-t}+e^{-3t}}{2}u(t)\) | |