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Noun
1. integration by parts; partial integrationMathematics
Wikipedia definition
2. Integration by partsIn calculus, and more generally in mathematical analysis, integration by parts is a theorem that relates the integral of a product of functions to the integral of their derivative and antiderivative. It is frequently used to find the antiderivative of a product of functions into an ideally simpler antiderivative. The rule can be derived in one line by simply integrating the product rule of differentiation.
Read “Integration by parts” on English Wikipedia
Read “部分積分” on Japanese Wikipedia
Read “Integration by parts” on DBpedia

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