sulthankareem

Consider a finite duration sequence x(n) of length N so that x(n)=0 for n < 0

and n > N-1.We want to compute the samples of its Z-transform X(z) at M equally

spaced points around the unit circle.One of the samples is to be at z=1.The number of

samples M less than the duration of the sequence N;i.e.,M < N.Determine and justify a

procedure for obtaining the M samples of X(z) and by computing only once the M-point

DFT of an M-point sequence obtained from x(n).

Q) Consider the first-order linear system defined by the difference equation y(n)=ay(n-1)=x(n),where the coefficient a is between zero and unity.The input x(n) is restricted to be a periodic sequence with period N;ie., ~x(n)=~x(n+kN) for any integer value

k.The lter output is assumed to have reached steady state .Determine,in terms of the

coefficient a,the unit-sample response for a nite impulse responselter which for this class

of inputs yields an output ~y(n) indistinguishable in steady state from the innite impulse

response filter defined by the above dieffrence equation.

Plz help me

By using 3,3,7,7 and any mathematical operations make the answer 24.

You can use any mathematical operations like +,-,*,/,....

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