PositiveRationals

PositiveRationals

表示严格的正有理数域,如 xPositiveRationals.

更多信息

  • 如果 x 是一个数值量,xPositiveRationals 立即进行计算.
  • Simplify[exprPositiveRationals,assum] 可用于尝试确定表达式在给定假设下是否为正有理数.
  • (x1|x2|)PositiveRationals{x1,x2,}PositiveRationals 测试是否所有的 xi 都是正有理数.
  • 正整数域被认为是正有理数域的子集.
  • PositiveRationalsStandardFormTraditionalForm 格式输出,如 TemplateBox[{}, PositiveIntegers]. 可用 prats 输入这种排版格式.

范例

打开所有单元关闭所有单元

基本范例  (3)

2/3 是一个正有理数:

正有理数的和是一个正有理数:

求方程的正有理数解:

范围  (5)

测试数值表达式属于哪个域:

进行域成员假设:

指定 Reduce 应该使用的默认域:

测试几个数字是否为正有理数:

如果任意一个数字明显不是正有理数,则结果为 False

TraditionalForm 格式:

属性和关系  (4)

Wolfram Research (2019),PositiveRationals,Wolfram 语言函数,https://reference.wolfram.com/language/ref/PositiveRationals.html.

文本

Wolfram Research (2019),PositiveRationals,Wolfram 语言函数,https://reference.wolfram.com/language/ref/PositiveRationals.html.

CMS

Wolfram 语言. 2019. "PositiveRationals." Wolfram 语言与系统参考资料中心. Wolfram Research. https://reference.wolfram.com/language/ref/PositiveRationals.html.

APA

Wolfram 语言. (2019). PositiveRationals. Wolfram 语言与系统参考资料中心. 追溯自 https://reference.wolfram.com/language/ref/PositiveRationals.html 年

BibTeX

@misc{reference.wolfram_2024_positiverationals, author="Wolfram Research", title="{PositiveRationals}", year="2019", howpublished="\url{https://reference.wolfram.com/language/ref/PositiveRationals.html}", note=[Accessed: 22-November-2024 ]}

BibLaTeX

@online{reference.wolfram_2024_positiverationals, organization={Wolfram Research}, title={PositiveRationals}, year={2019}, url={https://reference.wolfram.com/language/ref/PositiveRationals.html}, note=[Accessed: 22-November-2024 ]}