This equality holds for *all* real numbers N,M
Can you see why?pic.twitter.com/LvR2r0y6iT
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I’m not entirely sure what you’re asking, but I’m near certain there’s no typo
Why would inf be the lower bound when 0 is the top bound? (3rd line)
Take u=1/x, then the bounds go form u(0) ->u(inf) = inf -> 0.. since there is a minus sign from du we can absorb the negative and flip the bounds as to return the original 0->inf
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