Electronics and Communication Engineering - Exam Questions Papers - Discussion

1. 

Px(X) = M exp(- 2 |x|) + N exp(- 3 |x|) is the probability density function for the real random variable X, over the entire x axis. M and N are both positive real numbers. The equation relating M and N is

[A].
[B].
[C]. M + N = 1
[D]. M + N = 3

Answer: Option A

Explanation:

Using property of probability density of Pxdx = 1

[M exp(- 2 |x|) + N exp(- 3|x|)]dx

1 ⇒ .


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