每日一题

Mathematics>Standard Multiple Choice

Read the following SAT test question and then click on a button to select your answer.

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)

答案和解析

答案：A

解析：

Choice A is correct.