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GATE ECE 2004 | Question-19

The impulse response $h[n]$ of a linear time-invariant system is given by

\[h[n]=u[n+3]+u[n-2]-2 u[n-7]\]

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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