1.

What is the zero-input response of the system described by the homogenous second order equation y(n)-3y(n-1)-4y(n-2)=0 if the initial conditions are y(-1)=5 and y(-2)=0?

A. (-1)<sup>n-1</sup> + (4)<sup>n-2</sup>
B. (-1)<sup>n+1</sup> + (4)<sup>n+2</sup>
C. (-1)<sup>n+1</sup> + (4)<sup>n-2</sup>
D. None of the mentioned
Answer» C. (-1)<sup>n+1</sup> + (4)<sup>n-2</sup>


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