满分5 >
高中数学试题 >
下列集合中表示同一集合的是( ) A.M={(3,2)},N={(2,3)} B...
下列集合中表示同一集合的是( )
A.M={(3,2)},N={(2,3)}
B.M={4,5},N={5,4}
C.M={(x,y)|x+y=1},N={y|x+y=1}
D.M={1,2},N={(1,2)}
考点分析:
相关试题推荐
已知a≥
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230844038103446/SYS201311012308440381034021_ST/0.png)
,f(x)=-a
2x
2+ax+c.
(1)如果对任意x∈[0,1],总有f(x)≤1成立,证明c≤
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230844038103446/SYS201311012308440381034021_ST/1.png)
;
(2)已知关于x的二次方程f(x)=0有两个不等实根x
1,x
2,且x
1≥0,x
2≥0,求实数c的取值范围.
查看答案
(文科做)已知向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230844038103446/SYS201311012308440381034020_ST/0.png)
=(cos
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230844038103446/SYS201311012308440381034020_ST/1.png)
x,sin
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230844038103446/SYS201311012308440381034020_ST/2.png)
x),
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230844038103446/SYS201311012308440381034020_ST/3.png)
=(cos
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230844038103446/SYS201311012308440381034020_ST/4.png)
,-sin
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230844038103446/SYS201311012308440381034020_ST/5.png)
),且
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230844038103446/SYS201311012308440381034020_ST/6.png)
,求:
①
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230844038103446/SYS201311012308440381034020_ST/7.png)
及|
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230844038103446/SYS201311012308440381034020_ST/8.png)
|;
②若f(x)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230844038103446/SYS201311012308440381034020_ST/9.png)
-2λ|
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230844038103446/SYS201311012308440381034020_ST/10.png)
|的最小值是
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230844038103446/SYS201311012308440381034020_ST/11.png)
,求实数λ的值.
查看答案
已知
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230844038103446/SYS201311012308440381034019_ST/0.png)
<α<π,0<β<
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230844038103446/SYS201311012308440381034019_ST/1.png)
,sinα=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230844038103446/SYS201311012308440381034019_ST/2.png)
,cos(β-α)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230844038103446/SYS201311012308440381034019_ST/3.png)
,求sinβ的值.
查看答案
已知函数y=sin
2x+2sinxcosx+3cos
2x,x∈R,那么(Ⅰ)函数的最小正周期是什么?(Ⅱ)函数在什么区间上是增函数?
查看答案
已知α,β为锐角且cos α=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230844038103446/SYS201311012308440381034017_ST/0.png)
,cos β=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230844038103446/SYS201311012308440381034017_ST/1.png)
,则α+β的值等于
.
查看答案