0 votes 0 votes 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)? $e^{j\omega_0t}u(t)$ $\cos(\omega_0t)$ $e^{j\omega_0t}$ $\sin(\omega_0t)$ Complex Analysis gate2016-ec-1 complex-analysis + – Milicevic3306 asked Mar 27, 2018 • recategorized Mar 1, 2021 by Lakshman Bhaiya Milicevic3306 16.0k points 113 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.