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1. |
For a unit step signal u (t), the response is V1 (t) = (1-e-3t) for t>0. If a signal 3u (t) + (t) is applied, the response will be (considering zero initial conditions)? |
A. | (3-6e<sup>-3t</sup>)u(t) |
B. | (3-3e<sup>-3t</sup>)u(t) |
C. | 3u(t) |
D. | (3+3e<sup>-3t</sup>)u(t) |
Answer» D. (3+3e<sup>-3t</sup>)u(t) | |