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Natural Logarithm

The natural logarithm of a number is its logarithm in base e (Euler's number, aka Napier's constant). For a number x, the natural logarithm of x is the power to which e must be raised in order to produce x. Calcute implements the natural logarithm function with ln. The function inverses the effect of raising a number to the power of e so that for some number x, ln(ex) = x.


Function ln is only defined for numbers greater than zero.

Copyright © Réjean Lefebvre 2004-2011
Delta, British Columbia, Canada