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JavaScript: The Definitive Guide

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Math.pow() Function

Name

Math.pow() Function---compute xy

Availability

Navigator 2.0, Internet Explorer 3.0

Synopsis

Math.pow(x, y)

Arguments

x

The number or numeric expression to be raised to a power.

y

The power that x is to be raised to.

Returns

x to the power of y, xy

Description

Math.pow() raises its first argument to the power of its second argument and returns the result.

Usage

Any values of x and y may be passed to Math.pow(). However, if the result is an imaginary or complex number, then Math.pow() returns zero. In practice, this means that if x is negative, then y should be a positive or negative integer. Also, bear in mind that large exponents can easily cause floating-point overflow and return a value of infinity.

See Also

"Math", "Math.exp()"

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