Read the following SAT test question and then click on a button to select your answer.
8月SAT数学官方Daily Practice 每日一练,点击
The graph of the function f is the graph of the function g compressed horizontally by a factor of 2 and reflected over the y‑axis. Which of the following correctly defines the function f?
A.f(x)=g(-2x)
B.f(x)=-g(2x)
C.f(x)=2g(-x)
D.f(x)=-2g(x)
重点单词:
factor ['fæktə]n. 因素,因子vt. 把 ... 因素包括
multiple ['mʌltipl]adj. 许多,多种多样的n. 倍数,并联
function ['fʌŋkʃən]n. 功能,函数,职务,重大聚会vi. 运行
axis ['æksis]n. 轴,中枢
graph [grɑ:f]n. 图表,示意图
答案:A
解析:
Choice A is correct.
每日提分任务
专业提分资料
全程督学答疑