The natural logarithm of a number is its logarithm to the base of the mathematical constant e, which is an irrational and transcendental number approximately equal to 2.718. The natural logarithm of x is generally written as ln x, loge x, or sometimes, if the base e is implicit, simply log x.
The natural logarithm of a number is its logarithm to the base of the mathematical constant e, which is an irrational and transcendental number approximately equal to 2.718. The natural logarithm of x is generally written as ln x, loge x, or sometimes, if the base e is implicit, simply log x.
Source: Wikipedia "Natural logarithm" · CC BY-SA 4.0
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