满分5 >
高中数学试题 >
已知椭圆离心率为,一个短轴顶点是(0,-8),则此椭圆的标准方程为 .
已知椭圆离心率为
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128006410032/SYS201311031011280064100008_ST/0.png)
,一个短轴顶点是(0,-8),则此椭圆的标准方程为
.
考点分析:
相关试题推荐
设x,y满足约束条件
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128006410032/SYS201311031011280064100007_ST/0.png)
,则
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128006410032/SYS201311031011280064100007_ST/1.png)
取值范围是( )
A.[1,5]
B.[2,6]
C.[3,10]
D.[3,11]
查看答案
已知Ω={(x,y)|x+y≤6,x≥0,y≥0},A={(x,y)|x≤4,y≥0,x-2y≥0},若向区域Ω上随机投一点P,则点P落入区域A的概率为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128006410032/SYS201311031011280064100006_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128006410032/SYS201311031011280064100006_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128006410032/SYS201311031011280064100006_ST/2.png)
D.
查看答案
设函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128006410032/SYS201311031011280064100005_ST/0.png)
(其中0<ω<2),若函数f(x)图象的一条对称轴为x=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128006410032/SYS201311031011280064100005_ST/1.png)
,那么ω=( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128006410032/SYS201311031011280064100005_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128006410032/SYS201311031011280064100005_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128006410032/SYS201311031011280064100005_ST/4.png)
D.
查看答案
已知直线y=kx+1与曲线y=x
3+ax+b切于点(1,3),则b的值为( )
A.3
B.-3
C.5
D.-5
查看答案
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128006410032/SYS201311031011280064100003_ST/images0.png)
如图,一个空间几何体的正视图(或称主视图)、侧视图(或称左视图)、俯视图均为全等的等腰直角三角形,如果直角三角形的斜边长为
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128006410032/SYS201311031011280064100003_ST/0.png)
,那么这个几何体的体积为( )
A.1
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128006410032/SYS201311031011280064100003_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128006410032/SYS201311031011280064100003_ST/2.png)
D.
查看答案