The natural constant is a constant in mathematics, an infinite acyclic decimal and a transcendental number, which is about 2.7 1828, that is, the formula is IIM (1+ 1/x) x, x →

brief introduction

The first description of "natural logarithm" was found in the book Logarithm Mathematics published by Nicholas Mercator in 1668. He also independently discovered the same series, namely the Mercator series of natural logarithm. Around 1730, Euler defined the exponential function and natural logarithm which are reciprocal functions.

E is widely used in science and technology, and the logarithm with the base of 10 is generally not used. Taking e as the base can simplify many formulas, and it is the most "natural", so it is called "natural logarithm"