Signals and Systems - Engineering

Q1:

In the given figure 15.5 show a discrete time system consisting of a unit delay system, a multiplier and a summer, such that y(k) = x(k - 1) + 0.5 x(k). This system

A is linear

B is non linear

C may be linear or non linear depending on value

D impossible to judge

ANS:A - is linear

All the elements are linear.