题目
题目
单项选择题

The graph of the function [math: f(x)] is shown here. The rule for [math: f(x)] is:

选项
A.A. [math: f(x)=(x+2)(x−1)2(3−x)] f(x)=(x+2)(x-1)^2(3-x)
B.B. [math: f(x)=(x−2)(x+1)2(x+3)] f(x)=(x-2)(x+1)^2(x+3)
C.C. [math: f(x)=(x+2)(x−1)2(x−3)] f(x)=(x+2)(x-1)^2(x-3)
D.D. [math: f(x)=(x−2)(x−1)2(x−3)] f(x)=(x-2)(x-1)^2(x-3)
题目图片
查看解析

查看解析

标准答案
Please login to view
思路分析
To solve, we first identify the x-intercepts and their multiplicities from the graph, then match those with the polynomial factors provided. Option A: f(x)=(x+2)(x−1)^2(3−x) expands to a product with a factor (3−x) which is the same as −(x−3). This flips the end behavior relative to a positive leading coefficient. The intercepts would be at x=−2, x=1 (double root), and x=3, but the overall sign pattern and end behavior i......Login to view full explanation

登录即可查看完整答案

我们收录了全球超50000道考试原题与详细解析,现在登录,立即获得答案。

更多留学生实用工具

加入我们,立即解锁 海量真题独家解析,让复习快人一步!