engineering recuitment Indian Coast Guard Yantrik Mock Test 2024 Signals and Systems Discrete Time Signals and Systems Elementary Discrete Time Signals
Consider the statements given below regarding properties of impulse function:
1. \(\delta \left( {at} \right) = \frac{1}{{\left| a \right|}}\delta \left( t \right)\)
2. \(\mathop \smallint \limits_{ - \infty }^T x\left( t \right)\delta \left( {t - {t_o}} \right)dt = x\left( {{t_0}} \right)\), If T < t0
3. x(t) δ(t) = x(t)
4. x[n] δ[n – n0] = x[n0] δ[n – n0]
Which of the above statements are correct?
1
1, 2 and 3 only
2
1, 3 and 4 only
3
1 and 4 only
4
1 and 2 only