A causal system produces the output sequence y(n)={1,0.7} when excite – McqOptions

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1.	A causal system produces the output sequence y(n)={1,0.7} when excited by the input sequence x(n)={1,-0.7,0.1}, then what is the impulse response of the system function?
A.	[3(0.5)n+4(0.2)n]u(n)
B.	[4(0.5)n-3(0.2)n]u(n)
C.	[4(0.5)n+3(0.2)n]u(n)
D.	None of the mentioned
Answer» C. [4(0.5)n+3(0.2)n]u(n)

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