1.

when is a function f[n] said to be left-sided?

A. f[n] = 0 for n < 0
B. f[n] < 0 for n > 0
C. f[n] = 0 for n > n0 , n0 is positive integer
D. f[n] = ∞ for n < n0, n0 is positive integer
Answer» D. f[n] = ∞ for n < n0, n0 is positive integer


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