Physics · Signals and Systems
A continuous-time Linear Time-Invariant (LTI) system with impulse response h(t) is causal if and only if it satisfies which of the following conditions?
- 1h(t) = 0 for all t < 0✓
- 2h(t) is absolutely integrable
- 3h(t) is an even function
- 4h(t) is periodic
Correct answer
h(t) = 0 for all t < 0
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