满分5 >
高中数学试题 >
如图,在平面直角坐标系xOy中,圆x2+y2=r2(r>0)内切于正方形ABCD...
如图,在平面直角坐标系xOy中,圆x
2+y
2=r
2(r>0)内切于正方形ABCD,任取圆上一点P,若
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101329392215770/SYS201311031013293922157015_ST/0.png)
=a•
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101329392215770/SYS201311031013293922157015_ST/1.png)
+b•
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101329392215770/SYS201311031013293922157015_ST/2.png)
(a、b∈R),则a、b满足的一个等式是
.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101329392215770/SYS201311031013293922157015_ST/images3.png)
考点分析:
相关试题推荐
某三棱锥有五条棱的长度都为2,则当该三棱锥的表面积最大时其体积为
.
查看答案
若函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101329392215770/SYS201311031013293922157013_ST/0.png)
,且f(f(2))>7,则实数m的取值范围为
.
查看答案
曲线y=x
3+x-2的一条切线平行于直线y=4x-1,则切点P
的坐标为
.
查看答案
设函数f(x)=ax
2+bx+c(a,b,c∈R),若x=-1为函数y=f(x)e
x的一个极值点,则下列图象不可能为y=f(x)的图象是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101329392215770/SYS201311031013293922157011_ST/images0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101329392215770/SYS201311031013293922157011_ST/images1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101329392215770/SYS201311031013293922157011_ST/images2.png)
D.
查看答案
在等比数列{a
n}中,0<a
1<a
4=1,使不等式
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101329392215770/SYS201311031013293922157010_ST/0.png)
成立的最大自然数是( )
A.5
B.6
C.7
D.8
查看答案