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4.1: Radical Functions

  • Page ID
    203430
    • Roy Simpson, Cosumnes River College
    • OpenStax

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    Prerequisite Skills
    • Solving Inequalities
      • Solving Quadratic Inequalities

    Radical Functions

    Definition: Radical Function

    A radical function is a function that is defined by a radical expression.

    The Domain of a Radical Function

    Theorem: Domain of a Radical Function

    When the index of the radical is even, the domain of the radical function consists of all real numbers for which the radicand is greater than or equal to zero. When the index of the radical is odd, the domain of a radical function is all real numbers.

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    This page titled 4.1: Radical Functions is shared under a CC BY 4.0 license and was authored, remixed, and/or curated by Roy Simpson, Cosumnes River College (OpenStax) via source content that was edited to the style and standards of the LibreTexts platform.