A natural logarithm is a logarithm with the base of e, which is a prevalent and fundamental constant in much of mathematics. The reason we call this logarithm a natural logarithm is because of e's tendency to show up in much of mathematics. In a sense, e is natural to math. Conversely to this idea, the notion of a base 10 counting system is actually rather new, societies have used many different numeral systems in the past. In fact, irrational decimals represent numbers that can never be full explained using a particular numeral system and it would seem from this that grouping things in powers of 10 is particularly "unnatural".
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No. The so-called "natural" logarithms have a base of ' e ', and you can find the log of any positive number to any base you like.
2011
Natural logarithms are logarithms to base e, where e is the transcendental number which is roughly equal to 2.71828. One of its properties is that the slope (derivative) of the graph of ex at any point is also ex.
common logarithms, natural logarithms, monatary calculations, etc.
Natural logarithms use base e (approximately 2.71828), common logarithms use base 10.