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I need to calculate [tex]\int_{-\infty}^{\infty} x^{2} e^{-\frac{|x|}{b} dx[/tex] and I know the answer should involve [tex]\pi[/tex].

I've tried splitting the integral for x and -x with limits from 0 to infty and -infinty to 0, which gives me the answer of 2b. But I don't think this is correct. Does anyone have any hints or tips on what to do?

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# Integrating exp(mod(x))

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