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已知函数y=(x-a)(x-b)(其中a>b)的图象如下面右图所示,则函数y=a...
已知函数y=(x-a)(x-b)(其中a>b)的图象如下面右图所示,则函数y=ax+b的图象可能正确的是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164346519088880/SYS201310221643465190888004_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164346519088880/SYS201310221643465190888004_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164346519088880/SYS201310221643465190888004_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164346519088880/SYS201310221643465190888004_ST/images3.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164346519088880/SYS201310221643465190888004_ST/images4.png)
考点分析:
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如图,点A(1,1),B(3,1),C(3,-1),D(1,-1)构成正方形ABCD,以AB为边做等边△ABE,则∠ADE和点E的坐标分别为( )
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A.15°和(2,1+
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B.75°和(2,
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C.15°和(2,1+
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)或75°和(2,
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-1)
D.15°和(2,1+
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)或75°和(2,1-
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)
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对于化简
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我们有如下方法:原式=
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=
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=
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,试化简
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164346519088880/SYS201310221643465190888002_ST/4.png)
的结果是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164346519088880/SYS201310221643465190888002_ST/5.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164346519088880/SYS201310221643465190888002_ST/6.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164346519088880/SYS201310221643465190888002_ST/7.png)
D.
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下列判定三角形全等的定理中,能够直接或间接证明两个等腰直角三角形全等的有( )
①SSS;②SAS;③AAS;④SSA;⑤ASA;⑥HL.
A.3个
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若a=2,b=4,则
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164346519088880/SYS201310221643465190888000_ST/0.png)
的值为( )
A.
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B.
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C.2
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164346519088880/SYS201310221643465190888000_ST/3.png)
D.4
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如图,已知四边形ABCD是矩形,且MO=MD=4,MC=3.
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