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已知函数f(x)=(x-a)(x-b)(其中a>b)的图象如图所示,则函数g(x...
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已知函数f(x)=(x-a)(x-b)(其中a>b)的图象如图所示,则函数g(x)=a
x+b
x的图象是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702393600/SYS201310232121217023936006_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702393600/SYS201310232121217023936006_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702393600/SYS201310232121217023936006_ST/images3.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702393600/SYS201310232121217023936006_ST/images4.png)
考点分析:
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阅读如图的程序框图.若输入m=4,n=6,则输出的a,i分别等于( )
A.12,2
B.12,3
C.24,2
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已知cos(α-
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)=
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,则sin2α的值为( )
A.
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B.-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702393600/SYS201310232121217023936003_ST/3.png)
C.-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702393600/SYS201310232121217023936003_ST/4.png)
D.
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设平面向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702393600/SYS201310232121217023936002_ST/0.png)
=(1,2),
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=(-2,y),若
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∥
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702393600/SYS201310232121217023936002_ST/3.png)
,则|3
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+
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|等于( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702393600/SYS201310232121217023936002_ST/6.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702393600/SYS201310232121217023936002_ST/7.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702393600/SYS201310232121217023936002_ST/8.png)
D.
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给出下列四个命题:
①若集合A,B满足A∩B=A,则A⊆B;
②给定命题p,q,若“p∨q”为真,则“p∧q”为真;
③设a,b,m∈R,若a<b,则am
2<bm
2;
④若直线l
1:ax+y+1=0与直线l
2:x-y+1=0垂直,则a=1.
其中正确命题的个数是( )
A.1
B.2
C.3
D.4
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