LN (Number) LN (Number)

Number

Number Number

The input number.

Returns

Number Number

The natural logarithm of a number.

Returns the natural logarithm of a number (using Euler's number — the mathematical constant e —as its base). This function is the inverse of EXP. A number that is zero or negative results in an error.

Example

LN ( EXP (3))
LN ( EXP (3))

Returns 3.

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