causal and time variant

skan

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

Gokul43201

This sounds like it's from a DSP course. Is it ? Are you talking about filters ?

skan

yeah I am !! they are filters.

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skan	causal and time variant 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

Gokul43201 Recognitions: Gold Member Science Advisor Staff Emeritus	This sounds like it's from a DSP course. Is it ? Are you talking about filters ?