**Q1.** For each of the following signals

(i) *x*(*t*) = *e*^{–3t} (ii) *x*(*t*) = 3 *e*^{j5πt} and (iii) *x*(*t*) = *u*(*t*+ 1)

Verify the following:

- Causal or non-causal
- Even or odd
- Periodic or non-periodic
- Energy or power signal
- Continuous or piecewise continuous
- Deterministic or random

[*Ans.*(i) (a) Non-causal, (b) Neither even nor odd, (c) Non-Periodic, (d) Neither energy nor power, (e) Continuous signal, (f) Deterministic signal (ii) (a) Non-Causal, (b) Neither even nor odd, (c) Periodic, (d) Power signal, (e) Continuous, (f) Deterministic signal. (iii) (a) Non-Causal, (b) Neither even nor odd, (c) Non-Periodic, (d) Power signal, (e) Piecewise continuous signal, (f) Deterministic signal]

**Q2.** Determine whether the system is (a) Linear, (b) Causal, (c) Dynamic ...

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