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1. Which one is a non-causal system?





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  • By: guest on 02 Jun 2017 01.13 am
    Because in (a) if you put n = 1 then y(n) = x(2) which shows output depend upon future value. While in (b), (c) input converted to Past or Present and past. Note that n cannot be in fraction so for x(n/2) you will put n = 2, 4, ... etc. not 1, 3, 5 .... etc.
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