I'm doing probability hw, and got stuck on the following integration:
$$\int_{0}^{\infty }e^{\frac{-(\ln(y))^2}{2}}dy$$
Any hint would be very appreciate!! Thanks a lot!
2026-05-15 20:14:42.1778876082
How to integrate this exponential function?
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Make the change of variables $u=\ln y$ and then check Gaussian integrals.