函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102238572945164/SYS201311031022385729451013_ST/0.png)
的单调递增区间为
.
考点分析:
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在△ABC中,若sinA=2cosBcosC,则tanB+tanC=
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在平面直角坐标系xOy中,F
1,F
2分别为椭圆
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的左、右焦点,B,C分别为椭圆的上、下顶点,直线BF
2与椭圆的另一个交点为D,若
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,则直线CD的斜率为( )
A..
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B..
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C.
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D..
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已知f(x)=a
x-2,g(x)=log
a|x|(a>0且a≠1),若f(4)•g(-4)<0,则y=f(x),y=g(x)在同一坐标系内的大致图象是( )
A.
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B.
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C.
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D.
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抛物线y=2x
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B.2
C.
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D.3
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在△ABC中,P是BC边中点,角A、B、C的对边分别是a、b、c,若
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D.等腰三角形但不是等边三角形
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