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Formula Functions / Functions H to L / LN
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    LN
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    This function returns the natural logarithm of the specified number.

    Syntax

    LN(value)

    Arguments

    For the argument, specify a positive numeric value.

    Remarks

    This function is the inverse of EXP, so LN(EXP(x)) is x.

    Data Types

    Accepts numeric data. Returns numeric data.

    Examples

    LN(B3)

    LN(R1C2)

    LN(10) gives the result 2.3025850930

    LN(exp(1)) gives the result 1

    Version Available

    This function is available in product version 1.0 or later.

    See Also

    EXP | LOG | LOGINV | Math and Trigonometry Functions