Question: The PDF of a random variable has the form fx (x) = Ae- -2xu(x) where u(x) is the unit step function. D a) Find the

The PDF of a random variable has the form fx (x)

The PDF of a random variable has the form fx (x) = Ae- -2xu(x) where u(x) is the unit step function. D a) Find the value of A. b) Find the probability that X

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