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improper integral

noun Mathematics.
  1. Also called infinite integral. a definite integral in which one or both of the limits of integration is infinite.
  2. a definite integral in which the integrand becomes infinite at a point or points in the interval of integration.
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Origin of improper integral

First recorded in 1940–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for improper integral

improper integral

noun
  1. a definite integral having one or both limits infinite or having an integrand that becomes infinite within the limits of integration
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012