LN

The LN function returns the natural logarithm of a number (the power to which e must be raised to result in the number).

LN(pos-num)

pos-num: A number value. pos-num must be greater than 0.

Notes

  • EXP and LN are mathematical inverses over the domain where LN is defined, but because of floating-point rounding, =LN(EXP(x)) may not give exactly x.

Example

=LN(2.71828) returns approximately 0.999999327347282, the power to which e must be raised to produce 2.71828.

See alsoEXPLOG
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