2015年9月1日SAT官方每日一題

2015/09/02 瀏覽次數:4 收藏
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  2015年9月1日SAT官方逐日一題

  標題範例:Mathematics > Standard Multiple Choice

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

  (A) None

  (B) One

  (C) Two

  (D) Three

  (E) More than three

  謎底:C

  【剖析】The graph of the function g is the same as the graph of the function f translated up 4 units. The function f intersects the x-axis three times, but if the graph is shifted up 4 units, then the graph will intersect the x-axis only twice. Therefore, g(x) is equal to o for exactly two values of x between -5 and 15 .