题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140257-28427.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140257-20393.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140257-66047.png)
(1)求曲线C的轨迹方程;
(2)以曲线C的左顶点T为圆心作圆T:(x+2)2+y2=r2(r>0),设圆T与曲线C交于点M与点N,求
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140258-59823.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140258-15733.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140258-52017.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140258-68431.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140259-96935.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140258-52017.png)
(2)点M与点N关于x轴对称,设M(x1,y1),N(x1,-y1),不妨设y1>0.由于点M在椭圆C上,所以
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140259-41935.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140259-63067.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140258-59823.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140258-15733.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140258-59823.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140258-15733.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140259-41935.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140259-81160.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140300-32526.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140300-33410.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140300-32526.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140300-92481.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140300-26497.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140301-82240.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140258-59823.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140258-15733.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140300-26497.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140301-99719.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140301-82886.png)
又点M在圆T上,代入圆的方程得到r2=
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140258-68431.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140258-68431.png)
核心考点
试题【已知曲线C上动点P(x,y)到定点F1(,0)与定直线l1∶x=的距离之比为常数.(1)求曲线C的轨迹方程;(2)以曲线C的左顶点T为圆心作圆T:(x+2)2+】;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/20191023/20191023140251-54972.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140251-79617.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140251-60935.jpg)
(1)当l1与l2夹角为60°,双曲线的焦距为4时,求椭圆C的方程;
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140252-64138.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140252-36408.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140240-54346.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140240-18839.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140241-61872.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140241-61872.png)
(1)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140240-18839.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140241-95112.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140241-36148.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140242-48865.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140241-61872.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140240-18839.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140242-27753.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140242-88468.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140225-56992.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140225-55538.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140225-33630.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140225-93459.png)
(1)求C的方程;
(2)设直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140226-80574.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140226-59695.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140226-28148.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140226-16626.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140227-18859.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140215-51622.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140215-95781.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140216-40470.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140216-41552.png)
(1)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140215-51622.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140216-63390.png)
(2)在
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140215-51622.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140216-91671.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140217-29162.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140215-51622.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140217-52690.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140216-91671.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140217-78215.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140217-66846.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140217-66846.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140209-66270.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140209-88648.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140210-26784.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140210-95664.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140210-11748.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140210-66516.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140211-30702.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023140211-29685.png)
A.![]() | B.![]() | C.![]() | D.![]() |
最新试题
- 1在我国北方寒冷的地区,要用酒精温度计测温度而不使用水银温度计,原因是______.
- 2郎朗是当今中国最著名的“钢琴王子”。他小时候也有被父亲打的经历。有一次,郎朗因为学校有事回家晚了,耽误了练琴,父亲一怒之
- 3下列各组物质在溶液中能够大量共存的是 A.KNO3 NaCl H2SO4B.H2SO4 N
- 4下列各词语书写及加点字的注音全对的一项是( )A.妖娆(ráo)襁褓(qiáng bǎo)喑哑(yīn)许诺(ruò)
- 5一架飞机从北京起飞,一直向南飞行,最终可以:A.绕地球一周,回到北京B.到达赤道C.到达南极点D.到达北极点
- 6如图,平面内有三个向量,其中与的夹角为,与的夹角为,且,若,则( )A.B.C.D.
- 7用《都江堰现状图》与《都江堰示意图》作对比,然后分析下面两人的观点,看谁说的对。
- 8下列4组城市中,均位于我国半湿润地区的是[ ]A.沈阳、济南、郑州、西安 B.昆明、呼和浩特、太原、兰州 C.南
- 9如下图所示,将甲图中开关S闭合后电流表指针由中央向左偏转,当把一个线圈A和这个电流表串联起来(图乙),将一个条形磁铁B插
- 10若|x|+x=0,则x______0. (填“<”,“>”,“≤或≥”)
热门考点
- 1读下面的经纬网图,选择判断正确的一项( )A.四地都处在东半球B.C地处在北美洲热带地区,B图的比例尺最大C.如果四副
- 2x为何值时,代数式的值是非负数?
- 3买房难、上学贵、看病难、就业难成为我国新的民生问题。针对与此,我国政府采取了一系列措施,政府采取的一切措施概括起来就是A
- 4下列说法正确的是( )A.工业制取硫酸的设备依次是沸腾炉、热交换器、吸收塔B.硅是制造光导纤维的材料C.水玻璃是建筑行
- 5阅读理解。 Bill Gates is the richest person in the world. He"
- 6阅读文段,完成问题。小巷贾平凹 这是一条窄窄的小巷。 原住着一群瞎子。他们没有汽车,也没有自行车。这个城市越来越现代
- 7核能的合理利用一直是国际关注热点。已知某种核原料的原子核内含有1个质子和2个中子。下列关于该原子的说法正确的是 [
- 8如图所示,请在图上准确画出所给入射光线经两平面镜反射的反射光线.
- 9下列关于真菌的说法,正确的是 [ ]A.真菌都是多细胞的
- 10封闭在气缸内一定质量的理想气体由状态A变到状态D,其体积V与热力学温度关T系如图所示,该气体的摩尔质量为M,状态A的体积