0 0 votes The symbols, $a$ and $T,$ represent positive quantities, and $u(t)$ is the unit step function. Which one of the following impulse responses is NOT the output of a causal linear time-invariant system? $e^{+at}u(t)$ $e^{-a(t+T)}u(t)$ $1+e^{-at}u(t)$ $e^{-a(t-T)}u(t)$ Signals and Systems gate2019-ee signals-and-systems control-systems + – Arjun 374 views answer comment Share Follow 0 reply Please log in or register to add a comment.
