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A random variable X is defined by the double exponential distribution...

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Signal Processing
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A random variable X is defined by the double exponential distribution ρx(X) = ae-b|x| - ∞ < x < ∞
Where a and b are +ve constants. What is the relation between a and b so that ρx(X) is a probability density function?

Answer & Solution
Correct Answer: Option A
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