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Signals and Systems

Q1:

If ROC of x[n] is R1 then ROC of an x[n] is

A R1a

B R1/a

C a/R1

D R1 + a

ANS:B - R1/a

X[Z]-----x(n),
roc=R1 THEN using scaling in z domain X[Z/a]-------anx(n), roc=R1/a.



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