Question

The Laplace transform of f1 (t) + f2 (t) is?

(a) F1(s) + F2(s)

(b) F1(s) – F2(s)

(c) F1(s) – 2F2(s)

(d) F1(s) + 2F2(s)

The question was posed to me by my college director while I was bunking the class.

Question is taken from Operational Transforms in division Intoduction to the Laplace Transform of Network Theory

Answer 1

Correct answer is (a) F1(s) + F2(s)

For explanation: Addition or subtraction in time domain translates into addition or subtraction in frequency domain. L (f1 (t) + f2 (t)) = F1(s) + F2(s).