Logarithm based on constant e. Write lnn (n >; 0)。 It is of great significance in physics, biology and other natural sciences. The general representation is lnx. Logx is also commonly used in mathematics to represent natural logarithm.

In mathematics, logarithm is the inverse of power, just as division is the reciprocal of multiplication, and vice versa. This means that the logarithm of a number is an exponent that must produce another fixed number (radix). In a simple example, the logarithmic count factor in the multiplier.

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The concept of logarithm begins with 16 14. Six years later, John Napier and Jost Bürgi published their own logarithmic tables. At that time, through a large number of exponentiation operations on the base close to 1, the logarithm of the specified range and precision and the corresponding real number were found. At that time, there was no rational power.

William Jones (British mathematician) published the concept of power exponent in 1742. According to later generations, yost burgui's base number 1.000 1 is quite close to the base number e of natural logarithm, while John Napier's base number 0.9999999 is quite close to1/e.

In fact, there is no need to do high-power and difficult operations. It took John Napier 20 years to calculate the equivalent of a million times multiplication. Henry Briggs (mathematician) suggested that Napier use 10 as the base, but failed. He partially compiled the common logarithm table in 1624 by his own method.

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