双曲线的实轴长与虚轴长之和等于其焦距的2倍,且一个顶点的坐标为(

双曲线的实轴长与虚轴长之和等于其焦距的2倍,且一个顶点的坐标为(0,2),则双曲线的标准方程为…(　　)

A. B.

C. D.

答案

解析

:由方程组得a=2,b=2.

∵双曲线的焦点在y轴上,

∴双曲线的标准方程为

答案

相关题目

Many experts agree that there is a possibility _______ in this area in the follo

Many experts agree that there is a possibility _______ in this area in the following days.A. when some more earthquakes may happen B. that some more earthquakes may happenC. where may some mor

为探究血糖调节的影响因素，设计如下实验流程。实验中5只

为探究血糖调节的影响因素，设计如下实验流程。实验中5只家兔的注射剂量和生理指标均按单位体重计算。下列说法正确的是：（） A．

Being younger and thinner, she can eat super big hamburgers, ______ I have to

Being younger and thinner, she can eat super big hamburgers, ______ I have to give up in the interest of my weight. A. that B. who

True or False(判断下列句子是否符合短文内容, 符合的用”T”表

True or False(判断下列句子是否符合短文内容, 符合的用”T”表示,不符合的用”F”表示) : ( 7分)Biggie Burger, a new fast food restaurant, will soon be opened in the town. A

执行如图所示的程序框图，若输入A的值为2，则输出的n值为__

执行如图所示的程序框图，若输入A的值为2，则输出的n值为______．

——Could you tell me our new library will be completed? ——

——Could you tell me our new library will be completed? ——In two years． A． how long B． how soon C． how often D． how far

（二）古代诗歌鉴赏（11分）阅读下面这首唐诗，完成14~15题

（二）古代诗歌鉴赏（11分）阅读下面这首唐诗，完成14~15题吴中书事杨乘① 十万人家天堑东，管弦台榭满春风。名归范蠡五湖上，国破西施一笑中

流行歌曲《青花瓷》因其浓浓的复古中国风而颇受广大歌迷

流行歌曲《青花瓷》因其浓浓的复古中国风而颇受广大歌迷喜爱。晓婷同学从物理角度解读歌词，下列说法错误的是 �

双曲线的实轴长与虚轴长之和等于其焦距的2倍,且一个顶点的坐标为(

答案

相关题目

最新题目