# Difference between revisions of "Constant function"

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− | A '''constant function''' is a [[function]] which has a [[constant]] output: the value of the function does not depend on the value of its input. Equivalently, a constant function is a function whose [[range]] has only a single value. | + | A '''constant function''' is a [[function]] which has a [[constant]] output: the value of the function does not depend on the value of its input. Equivalently, a constant function is a function whose [[range]] has only a single value. For example, <math>f(x)=4</math> is a constant function, and so is <math>g(x)=\log_{34} </math>e^{\pi-\frac{1}{2}$. |

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## Revision as of 14:30, 9 February 2008

A **constant function** is a function which has a constant output: the value of the function does not depend on the value of its input. Equivalently, a constant function is a function whose range has only a single value. For example, is a constant function, and so is e^{\pi-\frac{1}{2}$.

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