某城市缺水问题比较突出,为了制定节水管理办法,对全市居民某年的月均用水量进行了抽样调查,其中4位居民的月均用水量分别为x
1,…,x
4(单位:吨).根据如图所示的程序框图,若分别为1,1.5,1.5,2,则输出的结果s为
.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225811699470184/SYS201311012258116994701011_ST/images0.png)
图是函数y=Asin(ωx+φ)(x∈R)在区间
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225811699470184/SYS201311012258116994701009_ST/0.png)
上的图象,为了得到这个函数的图象,只要将y=sinx(x∈R)的图象上所有的点( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225811699470184/SYS201311012258116994701009_ST/images1.png)
A.向左平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225811699470184/SYS201311012258116994701009_ST/1.png)
个单位长度,再把所得各点的横坐标缩短到原来的
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225811699470184/SYS201311012258116994701009_ST/2.png)
倍,纵坐标不变
B.向左平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225811699470184/SYS201311012258116994701009_ST/3.png)
个单位长度,再把所得各点的横坐标伸长到原来的2倍,纵坐标不变
C.向左平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225811699470184/SYS201311012258116994701009_ST/4.png)
个单位长度,再把所得各点的横坐标缩短到原来的
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225811699470184/SYS201311012258116994701009_ST/5.png)
倍,纵坐标不变
D.向左平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225811699470184/SYS201311012258116994701009_ST/6.png)
个单位长度,再把所得各点的横坐标伸长到原来的2倍,纵坐标不变
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