Question

Unit impulse ∂(t) is _____ of time t.

(a) Odd function

(b) Even function

(c) Neither even nor odd function

(d) Odd function of even amplitude

This question was addressed to me in exam.

This intriguing question comes from Elementary Signals in portion Signals and Systems Basics of Signals and Systems

Answer 1

Right answer is (b) Even function

The explanation is: For an impulse function,  ∂(-t)= ∂(t). Hence unit impulse is an even function of time t.