能將正弦曲線
![](http://thumb.zyjl.cn/pic2/upload/papers/20140823/20140823184232720534.png)
的圖像變?yōu)?img src="http://thumb.zyjl.cn/pic2/upload/papers/20140823/20140823184232736895.png" style="vertical-align:middle;" />的圖像的變換方式是
A橫坐標(biāo)變?yōu)樵瓉淼?倍,再向左平移
![](http://thumb.zyjl.cn/pic2/upload/papers/20140823/20140823184232767402.png)
B橫坐標(biāo)變?yōu)樵瓉淼?img src="http://thumb.zyjl.cn/pic2/upload/papers/20140823/20140823184232782346.png" style="vertical-align:middle;" />倍,再向左平移
C向左平移
![](http://thumb.zyjl.cn/pic2/upload/papers/20140823/20140823184232767402.png)
,再將橫坐標(biāo)變?yōu)樵瓉淼?img src="http://thumb.zyjl.cn/pic2/upload/papers/20140823/20140823184232782346.png" style="vertical-align:middle;" />倍 D向左平移
![](http://thumb.zyjl.cn/pic2/upload/papers/20140823/20140823184232845435.png)
,再將橫坐標(biāo)變?yōu)樵瓉淼?倍