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For an LTI discrete system to be stable, the square sum of the impulse response should be
  • a)
    Integral multiple of 2pi
  • b)
    Infinity
  • c)
    Finite
  • d)
    Zero
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
For an LTI discrete system to be stable, the square sum of the impulse...
If the square sum is infinite, the system is an unstable system. If it is zero, it means h(t) = 0 for all t. However, this cannot be possible. Thus, it has to be finite.
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For an LTI discrete system to be stable, the square sum of the impulse response should bea)Integral multiple of 2pib)Infinityc)Finited)ZeroCorrect answer is option 'C'. Can you explain this answer?
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