A sequence x(n) with the z-transform X(z) = z4 + z2 - 2z + 2 - 3z-4 is applied as an input to a linear, time-invariant system with the impulse response h(n) = 2δ(n - 3) where
$$\delta \left( n \right) = \left\{ {\matrix{
{1,} & {n = 0} \cr
{0,} & {{\rm{otherwise}}} \cr
} } \right.$$
The output at n = 4 is
A. -6
B. Zero
C. 2
D. -4
Answer: Option B
This Question Belongs to Electronics And Communications Engineering >> Signal Processing
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