I was playing tennis with my friend Herbert Hui this morning, and he casually tells me he knows six ways to do this integral. I couldn’t stop thinking about it during the game…. How many ways can _you_ solve it?pic.twitter.com/6AMkTGyU8T
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f(x) over 0-a = f(a-x) over 0-a right?
yup that or you can draw a picture
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