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calculus of finite differences

American  

noun

  1. the branch of mathematics dealing with the application of techniques similar to those of differential and integral calculus to discrete rather than continuous quantities.

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Formulae of the calculus of finite differences enable us from the chronograph records to infer the velocity and retardation of the shot, and thence the resistance of the air.

From Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy" by Various

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