Page 1 of 1

Which one of the following systems is causal?

Posted: Thu Jul 14, 2022 11:03 am
by answerhappygod
a) y(t)=x(t)+x(t-3)+x(t2)
b) y(n)=x(n+2)
c) y(t)=x(t-1)+x(t-2)
d) y(n)=x(2n2)