[Solution] A random variable X has a density function f(x)=c e^-|x|,-∞ [Hint: Remember that |x| is defined as being equal to -x if x<0, and equal
Question:
A random variable \(X\) has a density function \(f(x)=c e^{-|x|},-\infty
[Hint: Remember that \(|\mathrm{x}|\) is defined as being equal to \(-\mathrm{x}\) if \(\mathrm{x}<0\), and equal to \(\mathrm{x}\) if \(\mathrm{x} \geq 0\); you do not need a "formula" to integrate this function!]
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