

MCQOPTIONS
Saved Bookmarks
1. |
Which one of the following systems is causal? |
A. | y(t)=x(t)+x(t-3)+x(t<sup>2</sup>) |
B. | y(n)=x(n+2) |
C. | y(t)=x(t-1)+x(t-2) |
D. | y(n)=x(2n<sup>2</sup>) |
Answer» D. y(n)=x(2n<sup>2</sup>) | |