Time domain equation for for σ > 0

Q.  In the pictorial schematic shown below, what would be the equation of time domain behaviour produced due to complex frequency variable for σ > 0?
- Published on 06 Oct 15
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a. eσt sin ωt
b. eσt cos ωt
c. eσt sin ωt + eσt cos ωt
d. eσt sin ωt – eσt cos ωt

ANSWER: eσt cos ωt

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