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已知
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224251022317640/SYS201311012242510223176001_ST/0.png)
,若
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与
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224251022317640/SYS201311012242510223176001_ST/2.png)
平行,则k的值为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224251022317640/SYS201311012242510223176001_ST/3.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224251022317640/SYS201311012242510223176001_ST/4.png)
C.19
D.-19
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直线3x+4y-1=0的倾斜角为α,则cosα的值为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224251022317640/SYS201311012242510223176000_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224251022317640/SYS201311012242510223176000_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224251022317640/SYS201311012242510223176000_ST/2.png)
D.
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已知函数f(x)=2
x,数列{a
n}满足a
1=f(0),且
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224251022087723/SYS201311012242510220877024_ST/0.png)
.
(1)证明数列{a
n}是等差数列,并求a
2010的值;
(2)分别求出满足下列三个不等式:
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224251022087723/SYS201311012242510220877024_ST/1.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224251022087723/SYS201311012242510220877024_ST/2.png)
的k的取值范围,并求出同时满足三个不等式的k的最大值;
(3)若不等式
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224251022087723/SYS201311012242510220877024_ST/3.png)
对一切n∈N
*都成立,猜想k的最大值,并予以证明.
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对于命题P:存在一个常数M,使得不等式
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224251022087723/SYS201311012242510220877023_ST/0.png)
对任意正数a,b恒成立.
(1)试猜想常数M的值,并予以证明;
(2)类比命题P,某同学猜想了正确命题Q:存在一个常数M,使得不等式
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224251022087723/SYS201311012242510220877023_ST/1.png)
对任意正数a,b,c恒成立,观察命题P与命题Q的规律,请猜想与正数a,b,c,d相关的正确命题(不需要证明).
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设满足不等式组
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224251022087723/SYS201311012242510220877022_ST/0.png)
所表示的点的集合为A,满足不等式组
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224251022087723/SYS201311012242510220877022_ST/1.png)
所表示的点的集合为B.
(1)在集合A中任取一点(x,y),求点(x,y)∈B的概率;
(2)若(x,y)分别表示甲、乙两人各投掷一枚棱长均相等的三棱锥形状的玩具(各个面分别标有1,2,3,4),规定“甲所掷玩具朝下一面数字为x,乙所掷玩具的三个侧面数字之和为y”,求点(x,y)在集合B中的概率.
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