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parametric equation

noun Mathematics.
  1. one of two or more equations expressing the location of a point on a curve or surface by determining each coordinate separately.
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Origin of parametric equation

First recorded in 1905–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for parametric equations

parametric equations

pl n
  1. a set of equations expressing a number of quantities as explicit functions of the same set of independent variables and equivalent to some direct functional relationship of these quantitiesa circle x²+y²=r² has parametric equations x=r cos θ and y=r sin θ in terms of the parameters r and θ
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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