Whoever told you 13 was unlucky was lying to you..pic.twitter.com/AVbCsoOVB4
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For those who are curious, the integral of sin(x)/x does *not* need contour integration to be evaluated
Just needs a bit of creativity 
pic.twitter.com/0AxFSPWdyw
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You make math Pretty Thank you
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Love and jealous of it: to do the By Parts contrivance twice reminds me of The Joy of Slightly Fishy Proofs https://mathwithbaddrawings.com/2017/05/17/the-joy-of-slightly-fishy-proofs/ … via
@benorlinThanks. Twitter will use this to make your timeline better. UndoUndo
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Beautiful! It can also be tackled with the so-called Feynman technique: http://fy.chalmers.se/~tfkhj/FeynmanIntegration.pdf …
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