We all know about the famous equation: [itex]\int_{-\infty}^\infty e^{-x^2} dx=\sqrt{\pi}[/itex].(adsbygoogle = window.adsbygoogle || []).push({});

How about [itex]\int_{-\infty}^\infty e^{-x^4} dx[/itex]?

Or, in general, can we calculate any integral in the form [itex]\int_{-\infty}^\infty e^{-x^n} dx[/itex], where n is an even counting number?

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# Similar problem to Gaussian integral

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