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Signals and Systems - Engineering

Q1:

The range of values of a and b for which the linear time invariant system with impulse response.
h(n) = an n ≥ 0
        = bn n < 0
will be stable if

A |a| > 1, |b| > 1

B |a| < 1, |b| < 1

C |a| < 1, |b| > 1

D |a| > 1, |b| < 1

ANS:C - |a| < 1, |b| > 1

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