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- \( x[n] + x[n-1] + x[n-2] \)
- \( x[n-1] + x[n] + x[n+1] \)
- \( x[n] + x[n+1] + x[n+2] \)
- \( x[n+1] + x[n+2] + x[n+3] \)
The Correct Option is A
Solution and Explanation
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