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Causal and time variant

  1. Oct 25, 2004 #1
    1.g(t) = f(t) + f(-t)
    2. g(t)= f(t/2)
    can someone pls explain why these functions are time variant and non causal
     
  2. jcsd
  3. Oct 26, 2004 #2

    Gokul43201

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    This sounds like it's from a DSP course. Is it ? Are you talking about filters ?
     
  4. Oct 26, 2004 #3
    yeah I am !! they are filters.
     
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