Rational

Pronunciation: /ˈræʃ nl/ Explain

A mathematical object is rational if it can be expressed as a ratio.

  1. A rational number is a number that can be expressed as the ratio of two integers.
  2. A rational equation is an equation that has a fraction on one or both sides of the equation. A rational equation is also called a fractional equation.
  3. A rational expression is an expression that contains a ratio of two polynomials.
  4. A rational function is a function that contains a rational expression.
  5. A rational root is a root of a polynomial that is a rational number.

    Cite this article as:

    McAdams, David E. Rational. 5/5/2011. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/r/rational.html.

    Revision History

    2/10/2009: Added definition of rational equation. (McAdams, David E.)
    2/6/2009: Added rational root to list. (McAdams, David E.)
    1/19/2009: Initial version. (McAdams, David E.)

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