Question

函數(shù)y=ax²+ bx與y=  (ab ≠0，| a |≠|(zhì) b |)在同一直角坐標(biāo)系中的圖像可能（   ）

Answer 1

D

本題考查二次函數(shù)，對(duì)數(shù)函數(shù)的圖像和性質(zhì)及圖像的區(qū)分方法.
對(duì)于A:由二次函數(shù)圖像知對(duì)稱(chēng)軸對(duì)數(shù)函數(shù)是減函數(shù)，則A不正確；同樣可得B不正確；
對(duì)于C:由二次函數(shù)圖像知對(duì)稱(chēng)軸對(duì)數(shù)函數(shù)是增函數(shù)，則C不正確;
對(duì)于D:由二次函數(shù)圖像知對(duì)稱(chēng)軸對(duì)數(shù)函數(shù)是減函數(shù),圖像符合，則D正確.故選D