一. 理解函数(function),定义域(domain),值域(range)的含义,并学会根据图像判定是否是函数,以及对函数进行分类 函数的类型 这两种不是函数 函数是一种关系式,一个输入只能对应一个输出,上图中的(c)和(d)一个横坐标对应两个y值的都不是函数。 二. 学会求函数的值域或复合函数(composite function)的值域 对于...
Functions, Range & Domain Coordinate Notation •A relation is a set of ordered pairs (x, y). •The Domain is the set of all the first coordinates, or X coordinates. •The Range is the set of all second coordinates, or Y Coordinates BACK Express as Ordered Pair X Y -2 -4 -1...
1.1 Functions and Their Graphs Functions;Domain and Range y=f(x) In this notation, the symbol f represents the function, the letter x is the independent variable(自变量) representing the input value of f, and y is the dependent variable(因变量) or output value of f at x. The set D ...
The output of a functionf:A→Bf:A→Balways belongs to the co-domainBB. However, not all values in the co-domain are always covered by the function. In the above example,f:R→Rf:R→R, the function value is always a positive numberf(x)=x2≥0f(x)=x2≥0. We define therangeof...
Domain and range of a function The domain of a function is all the possible values of x's of ordered pairs; whereas the range of a function is all the possible values of y's of ordered pairs. You can easily find them by graphing the functions or ordered pairs. Let's see how in th...
How_to_find_domain_and_range_of_functions值域问题 值域问题是高中函数的一个精华问题。有很多问题都是围绕着他展开的。比如说恒成 立问题,值域反求定义与问题(即反函数求定义域)……等等。下面就说一下最基本的集中求 值域问题的类型。 首先要着重说的是:求值域,必先看定义域。所有函数都是如此。 1.单调...
2. How do students' use of strategies and their understanding of concepts and representations impact their understanding of the domain and range of a graphical representation of a function?;The findings of this study exposed that many students have diverse transitional strategies and conceptions. ...
The function f(x) goes from the domain to the range, The inverse function f-1(y) goes from the range back to the domain.Let's plot them both in terms of x ... so it is now f-1(x), not f-1(y):f(x) and f-1(x) are like mirror images (flipped about the diagonal)....
√|x|-x不等于0 x+1不等于0 计算得x<0且x不等于-1 √|x|-x>0 y=(x+1)^0/√|x|-x在定义域内等于y=1/√|x|-x 所以y>0 定义域x<0且x不等于-1 值域y>0 (b) y=1/1-√x-2 x-2>=0 x<=2 y=1-√x-2 √x-2>=0 y<=1 定义域x<2 值域y<...
百度试题 结果1 题目Determine the domain and range of the following functions. Assume that the entire function is shown.Domain: ___Range: ___ 相关知识点: 试题来源: 解析 (-2,2)(1,3)反馈 收藏