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en.wikipedia.org/wiki/Function_of_a_real_variable
A realvalued function of a real variable is a function that takes as input a real number, commonly represented by the variable x, for producing another real number ...

dictionary.reference.com/browse/realvariable
real variable [reeuh l, reel] /ˈri əl, ril/ Spell Syllables noun, Mathematics. 1. a variable to which only real numbers are assigned as values. Dictionary.com ...

en.wikipedia.org/wiki/Real_variable
In mathematics, a real variable may be: A variable taking real values: see Function of a real variable; A free variable (archaic)

economics.about.com/cs/macrohelp/a/nominal_vs_real.htm
What's the difference between nominal and real? Nominal vs. Real Question Answered: ... Generally a real variable, such as the real interest rate, ...

www.math.harvard.edu/~shlomo/docs/Real_Variables.pdf
2 Introduction. I have taught the beginning graduate course in real variables and functional analysis three times in the last ﬁve years, and this book is the result.

www.isnare.com/encyclopedia/Function_of_a_real_variable
Function of a real variable : In mathematical analysis, and applications in geometry, applied mathematics, engineering, and natural sciences, a function of a real ...

www.merriamwebster.com/dictionary/real%20variable
Seen and Heard. What made you want to look up real variable? Please tell us where you read or heard it (including the quote, if possible).

www.businessdictionary.com/definition/realvariable.html
real rate of re... real return; real terms; real time; real time capab... real time proce... real time testi... real time trans... real variable; real wage rate

encyclopedia2.thefreedictionary.com/Real+variable
real variable [′rēl ′ver·ē·ə·bəl] (mathematics) A variable that assumes real numbers for its values.

www.econlib.org/library/Topics/HighSchool/RealvsNominal.html
Supplementary resources by topic. Real vs. Nominal is one of 51 key economics concepts identified by the National Council on Economic Education (NCEE) for high school ...