engineering recuitment NIC NIELIT Scientist B 2023 Mock Test Signals and Systems Fourier Series Forms of Fourier Series
Which one of the following is an eigen function of the class of all continuous-time, linear, time invariant systems (u(t) denotes the unit-step function)?
1
ejω0t u(t)
2
cos ω0t
3
ejω0t
4
sin ω0t