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为了得到函数y=sin2x+sinxcosx的图象,可以将函数y=sin2x的图...
为了得到函数y=sin
2x+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049004_ST/0.png)
sinxcosx的图象,可以将函数y=sin2x的图象( )
A.向左平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049004_ST/1.png)
个单位长度,再向下平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049004_ST/2.png)
个单位长度
B.向右平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049004_ST/3.png)
个单位长度,再向上平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049004_ST/4.png)
个单位长度
C.向左平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049004_ST/5.png)
个单位长度,再向下平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049004_ST/6.png)
个单位长度
D.向右平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049004_ST/7.png)
个单位长度,再向上平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049004_ST/8.png)
个单位长度
考点分析:
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已知函数f(x)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049003_ST/0.png)
sinwx+coswx(w>0),y=f(x)的图象与直线y=2的两个相邻交点的距离等于π,则f(x)的单调递增区间是( )
A.[kπ-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049003_ST/1.png)
,kπ+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049003_ST/2.png)
],k∈Z
B.[kπ+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049003_ST/3.png)
,kπ+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049003_ST/4.png)
],k∈Z
C.[kπ-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049003_ST/5.png)
,kπ+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049003_ST/6.png)
],k∈Z
D.[kπ+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049003_ST/7.png)
,kπ+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049003_ST/8.png)
],k∈Z
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将函数y=sin2x的图象向左平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049002_ST/0.png)
个单位,再向上平移1个单位,所得图象的函数解析式是( )
A.y=2cos
2B.y=2sin
2C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049002_ST/1.png)
D.y=cos2
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已知简谐运动f(x)=Asin(ωx+φ),
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049001_ST/0.png)
的部分图象如图示,则该简谐运动的最小正周期和初相φ分别为( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049001_ST/images1.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049001_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049001_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049001_ST/3.png)
D.
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函数y=sin(ωx+ϕ)的部分图象如右图,则ω,ϕ可以取的一组值是( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049000_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049000_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049000_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049000_ST/2.png)
D.
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已知曲线C是到点
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863801513/SYS201310232121388638015021_ST/0.png)
和到直线
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863801513/SYS201310232121388638015021_ST/1.png)
距离相等的点的轨迹,l是过点Q(-1,0)的直线,M是C上(不在l上)的动点;A、B在l上,MA⊥l,MB⊥x轴(如图).
(Ⅰ)求曲线C的方程;
(Ⅱ)求出直线l的方程,使得
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863801513/SYS201310232121388638015021_ST/2.png)
为常数.
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