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Signals and Systems - Engineering

Q1:

consider the following as regards cumulative disribution function F(x)
  1. 0 ≤ F(x) ≤ 1
  2. F(- ∞) = 0
  3. F(∞) = 1
  4. F(x1) ≤ F(x2) If x1 < x2
Out of above which are correct?

A 1 and 2 only

B 1, 2 and 3 only

C 1, 2, 3 and 4

D 2 and 4

ANS:C - 1, 2, 3 and 4

No answer description is available.