Q.

An exponentially growing sinusoidal signal is:

A. σ = 0 and Ω = 0
B. σ > 0 and Ω ≠ 0
C. σ < 0 and Ω ≠ 0
D. σ = 0 and Ω ≠ 0
Answer» B. σ > 0 and Ω ≠ 0
Explanation: a complex exponential signal is sinusoidal when Ω has a definite value i.e., Ω ≠ 0. it can either be growing exponential or decaying exponential based on the value of σ.
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