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函数(x∈[0,π])的单调递减区间是( ) A. B. C. D.
函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183441842378609/SYS201310241834418423786012_ST/0.png)
(x∈[0,π])的单调递减区间是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183441842378609/SYS201310241834418423786012_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183441842378609/SYS201310241834418423786012_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183441842378609/SYS201310241834418423786012_ST/3.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183441842378609/SYS201310241834418423786012_ST/4.png)
考点分析:
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对于函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183441842378609/SYS201310241834418423786011_ST/0.png)
,存在一个正数b,使得f(x)的定义域和值域相同,则非零实数a的值为
.
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f(x)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183441842378609/SYS201310241834418423786010_ST/0.png)
,则f(1°)+f(2°)+…+f(58°)+f(59°)=
.
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点P为双曲线
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183441842378609/SYS201310241834418423786009_ST/0.png)
上一点,F
1,F
2为它的左、右两个焦点,PQ是∠F
1PF
2的角分线.过F
1作PQ的垂线,垂足为R,点O为坐标原点,则|OR|=
.
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已知数列{a
n}对于任意的p、q∈N
*,满足a
p+q=a
p+a
q且a
2=2,则
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183441842378609/SYS201310241834418423786008_ST/0.png)
=
.
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设
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183441842378609/SYS201310241834418423786007_ST/0.png)
且a≥0,b≥0,O为坐标原点,若A、B、C三点共线,则4
a+2
1+b的最小值为
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