For the Laplace distribution f(x)=12be−∣x−μ∣bf(x) = \frac{1}{2b} e^{-\frac{|x-\mu|}{b}}f(x)=2b1e−b∣x−μ∣, what is the variance?
bbb
b2b^2b2
2b22b^22b2
4b24b^24b2