Multiple choice

The impulse response h [n] of a linear time-invariant system is given by h[n]= u[n+3] + u [n-2)-2n[n-7] where u[n] is the unit step sequence. The above system is

  1. stable but not causal

  2. stable and causal

  3. causal but unstable

  4. unstable and not causal
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A Correct answer
Explanation

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