题目:How many real numbers are there?主讲人:Ralf Schindler Universität Münster, 视频播放量 1320、弹幕量 0、点赞数 31、投硬币枚数 7、收藏人数 45、转发人数 1, 视频作者 武汉大学哲学学院, 作者简介 ,相关视频:【逻辑与数学基础讲座】反推数学及其数学基础
Real numbers that are not rational are called irrational numbers. They are characterized by having nonterminating and nonrepeating decimal expansions. Since every decimal expansion represents a real number, it should be clear that there are infinitely manyirrational numbers. Both rational and irrational ...
结果1 题目Suppose that x and y are nonzero real numbers such that x yx−2y=−1, what is the value of xy?A. 2 B. −2 C. 1 D. 12 相关知识点: 试题来源: 解析 D Rearranging, we find x+y=2y−x,2x=y.反馈 收藏
Suppose that x and y are nonzero real numbers such that 3x yx−3y=− What is the value of x 3y3x−y( )?A. −3 B. −1 C. 1 D. 2 E. 3 相关知识点: 试题来源: 解析 D 由3x+yx−3y=−2,可得:−2(x−3y)=3x+y,即−2x+6y=3x+y,移项可得:5y=5x,即y=x,...
Supposea,b and c are nonzero real numbers, and a+b+c=0. What are the possible value(s) for a|a|+b|b|+c|c|+abc|abc|? ( )A.0B.1and−1C.2and−2D.0,2and−2E.0,1and−1 答案 A翻译:假设 a、b、c 都是不为 0的实数,a+b+c=0.那么a|a|+b|b|+c|c|+abc|a...
real-numbers 英['reɪɑ:ln'ʌmbəz] 美['reɪɑln'ʌmbəz] 释义 [医]实数 实用场景例句 全部 The real numbers are called the barycentric coordinates of x. 实数称为X重心坐标. 辞典例句 There are infinitely many real numbers between any two distinct real numbers....
【题目】5. Find alreal numbers a, for which there exist non-negative real numbers x1, x2, x3, x satisfying the relations∑_(k=1)^5kx_k=a . ∑_(k=1)^sk^3x_k=a^2 , ∑_(k=1)^sk^5x_k=a^3(ISA)5.求出所有的实数a,使得非负实数x3,x2,x3,x, x_5 满足∑_(k=1)^5kx...
Real Numbers: Numbers are categorized in different forms such as fractional or integral, positive or negative, natural or whole, etc. Real numbers are a set all the numbers that can quantify real physical quantities such as temperature, length, mass, etc. ...
The set of all real numbers is called___.相关知识点: 试题来源: 解析 The set of all real numbers is called R. 实数集包含所有实数,包括有理数(整数和分数)和无理数(如π和√2)。实数集通常用字母“R”表示。因此,所有实数的集合被称为 R。反馈...
【题目】Suppose that x and y are nonzero real numbers suchha (3x+y)/(x-3y)=-2 Wase aeo (x+3y)/(3x-y) (x-3yA.-3B.-1C.1D.2E.3 相关知识点: 试题来源: 解析 【解析】D 结果一 题目 【题目】Suppose that x and y are nonzero real numbers suchthat3x+y=-2.What is the value...