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单词 Finite decimal
释义

Finite decimal

中文百科

小数 Decimal representation

(重定向自Finite decimal)

小数,是实数的一种特殊的表现形式。所有分数都可以表示成小数,小数中的圆点叫做小数点,它是一个小数的整数部分和小数部分的分界号。其中整数部分是零的小数叫做纯小数,整数部分不是零的小数叫做带小数。

2.718
整数部分小数点 小数部分
英语百科

Decimal representation 小数

(重定向自Finite decimal)
This article gives a mathematical definition. For a more accessible article see Decimal.

A decimal representation of a non-negative real number r is an expression in the form of a series, traditionally written as a sum

where a0 is a nonnegative integer, and a1, a2, ... are integers satisfying 0  ai  9, called the digits of the decimal representation. The sequence of digits specified may be finite, in which case any further digits ai are assumed to be 0. Some authors forbid decimal representations with a trailing infinite sequence of "9"s. This restriction still allows a decimal representation for each non-negative real number, but additionally makes such a representation unique. The number defined by a decimal representation is often written more briefly as

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更新时间:2025/6/22 16:09:19