it was sent to me , but not being a math person i dont get the joke or am i totally daft?
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I have not seen this but it looks to me like $\displaystyle \displaystyle \left( \int_{-\infty}^{\infty} e^{-x^2}~dx \right)^2 =1^2=1$
$\displaystyle \displaystyle \int_{-\infty}^{+\infty} e^{-x^2} dx = \sqrt{\pi}$ Do you get it now?
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