I am just learning how to find lengths of curves using calculus. √((dx)(adsbygoogle = window.adsbygoogle || []).push({}); ^{2}+(dy)^{2})→∫√(1+(dy)^{2})dx. My question is how are you able to bring out the dx. Is this some sort of algebraic trick I've never heard of. Can someone please explain this to me?

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# Finding lengths of curves

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