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Question: evaluating the following limit

Question:evaluating the following limit

GPY 80 Maple
statistics integration pdf wolframalpha
July 20 2015
0

I'm trying to determine that f(x) = (a/2)*e^(-a|x|) is a pdf for which I have tried to calcuate the integral from -infinity to +infinity but I am no getting a result that converges(even the wolfram alpha widget said the integral doesn't converge). How do I correcly implement this?
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