Signals and Systems - Engineering

Q1:

The following table gives some time functions and the Laplace transforms

Of these correctly matched pairs are

A 2 and 4

B 1 and 4

C 3 and 4

D 1 and 2

ANS:A - 2 and 4

Laplace transform [del(t)] = 1 for all s.

L[u(t)]=1/s for Re(s)>0.
L[tu(t)]=1/s^2 for Re(s)>0.
L[t^2u(t)]=2/s^3 for Re(s)>0.
So, option 1 is correct.