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 Extrapolated Faá Di Bruno's Formula Xorter Fellow Posts: 93 Threads: 30 Joined: Aug 2016 11/19/2016, 02:07 PM Here is how to evaluate the nth derivative of f o g: https://en.wikipedia.org/wiki/Faà_di_Bru...orial_form http://www.maa.org/sites/default/files/i...17-234.pdf My question is that: Is it possible to get a formula for integrate f o g dx? Where integrating means the -1st derivative. Can we extrapolate this formula to the negative numbers? Xorter Unizo Xorter Fellow Posts: 93 Threads: 30 Joined: Aug 2016 11/19/2016, 02:37 PM What if I say the next: N=-1 int f o g dx = ? -1b[-1] = -1 b[-1] = 1 k = 1 int f o g dx = (-1)!/1! f' o g * (g^(-1)/(-1)!)^1 = f' o g * int g dx But it does not work ... Why? Xorter Unizo « Next Oldest | Next Newest »

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