题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175950-87057.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175950-12132.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175950-65072.gif)
(Ⅰ)求椭圆的方程;
(Ⅱ)过点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175950-89481.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175951-83948.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175951-48037.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175951-14712.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175951-36283.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175951-83948.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175952-60681.gif)
(Ⅱ)首先,直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175951-83948.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175952-94693.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175952-42705.gif)
设直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175951-83948.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175952-59777.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175953-57533.gif)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175953-81916.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175953-94436.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175953-79357.gif)
又
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175954-26997.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175954-90829.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175954-74359.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175954-40764.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175955-13220.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175955-66226.gif)
解析
核心考点
试题【已知椭圆:的左右焦点分别为,离心率为,两焦点与上下顶点形成的菱形面积为2.(Ⅰ)求椭圆的方程;(Ⅱ)过点的直线与椭圆交于A, B两点,四边形为平行四边形,为坐标】;主要考察你对椭圆的定义与方程等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175937-64892.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175938-96737.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175938-41470.gif)
(1)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175938-51970.gif)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175938-36841.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175938-51970.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175938-16893.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175939-40989.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175939-31537.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175939-40808.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175938-51970.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175938-36841.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175940-83943.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175940-45826.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175940-85038.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175939-40808.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175938-51970.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175940-70266.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175917-29275.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175917-71376.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175917-15485.gif)
(1)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175917-74468.gif)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175918-60104.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175917-74468.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175918-63758.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175917-74468.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175918-60104.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175918-56627.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175918-86567.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175919-28119.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175919-18976.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175919-82481.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175911-32592.gif)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175908-16411.gif)
A.70 | B.35 | C.30 | D.20 |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175851-26959.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175851-74838.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175851-21120.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175851-93220.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175851-18372.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175851-76882.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175851-61753.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175852-43127.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175852-68264.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175852-73641.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175851-18372.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175852-20515.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175852-24371.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175852-28624.png)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175852-70564.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175853-57641.jpg)
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175853-44236.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175853-66206.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175851-93220.png)
(ii)试问点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175851-61753.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175852-20515.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175853-10530.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023175853-18578.png)
最新试题
- 1不等式组2x+1≥3x<3的解集在数轴上表示正确的是( )A.B.C.D.
- 2“十二五”时期,加快转变经济发展方式、保持经济平稳较快发展,必须与改善民生紧密结合起来,要以解决人民群众最关心、最直接、
- 3有时候,将氧化还原方程式拆开写成两个“半反应”。下面是一个“半反应”式:( )+( )H++( )e-
- 4点P(x,y)在曲线 (θ为参数,θ∈R)上,则的取值范围是 .
- 5三角形的外心是( ) 的圆心,它是( )的交点,它到( )的距离相等。
- 6小明给小刚出了一道数学题,题目是:“二元一次方程组2x+ay=3bx+y=3的解是x=2y=1,你能求出我原来的方程组吗
- 7【题文】已知定义在R上的函数f(x)满足f(0)=1,且对任意x,y∈R,都有f(x-y)="f(x)"
- 8从静止开始做匀加速直线运动的物体,前20s内的位移是10m,则该物体运动1min时的位移为 ( )A.36mB.60
- 9《三国演义》中的“赤壁之战”,曹操率百万水师乘船横渡长江,声势浩大,却被周瑜的火攻和孔明“借”来的东风弄得大败而逃.用燃
- 10下边漫画主要说明 [ ]A.汉字应该有所发展 B.传统文化应当继承 C.民族语言需要创新
热门考点
- 1下列关于解放战争时期三大战役的表述哪一项是错误的[ ]A.标志着人民解放战争在全国取得了胜利B.是人民解放军与国
- 2下列关于动物在自然界中的作用的叙述,错误的是( )A.在一个生态系统中,动物能促进物质循环B.在生态系统中,动物是分解
- 3已知等比数列{an}为递增数列,且,则数列{an}的通项公式an =______________。
- 4下列图形中,不是轴对称图形的是( )
- 5如图所示,有两个长度相等的滑梯(即BC=EF)左边滑梯的高度AC与右边滑梯水平方向的长度DF相等,求∠ABC+∠DFE的
- 6用计算器计算:sin35°=( )(结果保留两个有效数字)。
- 7质量相等的甲、乙两车,在同一平直公路上向西行驶,他们行驶过程中的路程与时间图象如图所示,则下列说法中正确的是( )A.
- 8(1)请用“>”、“<”、“=”填空①32+22( )2×3×2
- 9用伏安法测电阻(1)在方框内画出电路图.(2)伏安法测电阻的原理是______.(3)连接电路时,开关应______,要
- 10完成句子:根据句意及汉语提示, 用词组的适当形式填空。(每小题2分)小题1:We usually go to schoo