DSP Important questions for mid

hii frnds, these are DSP important questions for our mid

 

the question in the 9th question is: 

y(n) = -(3/8) y(n-1)+(3/32) y(n-2) + (1/64) y(n-3) + x(n) + 3x(n-1) + 2x(n-2)

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