Question

若函數(shù)的定義域?yàn)?img src="http://thumb.zyjl.cn/pic2/upload/papers/20140824/20140824025935932839.png" style="vertical-align:middle;" />，值域?yàn)?img src="http://thumb.zyjl.cn/pic2/upload/papers/20140824/20140824025935948839.png" style="vertical-align:middle;" />，則的圖象可能是        .（填序號(hào)）.

①                   ②                  ③                  ④

Answer 1

②

試題分析：排除法，函數(shù)的定義域?yàn)?img src="http://thumb.zyjl.cn/pic2/upload/papers/20140824/20140824025935932839.png" style="vertical-align:middle;" />排除①、④，再根據(jù)函數(shù)的定義，對(duì)定義域中任取一個(gè)，都有唯一一個(gè)與之對(duì)應(yīng)，排除③.故填②.