Signals and Systems - Engineering

Q1:

The signumm function written as [sgn(t)] is defined as

A sgn(t) = - 1 for t < 0, = 0 for t = 0 and = 1 for t > 0

B sgn(t) = 1 for t < 0, = 0 for t = 0 and = - 1 for t > 0

C sgn(t) = 0 for t < 0, = 1 for t = 0 and = 0 for t > 0

D sgn(t) = 0 for t < 0, = 1 for t3 0

ANS:A - sgn(t) = - 1 for t < 0, = 0 for t = 0 and = 1 for t > 0

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