分别求解以下两个小题:
(1)已知双曲线过点
,渐近线方程为
,求该双曲线的标准方程;
(2)已知点P为椭圆
上的任意一点,O为原点,M满足
,求点M的轨迹方程.
(1)已知双曲线过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/102816d4b6b29de21b584bb0c1bfcd3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060e229870f126b31e37965bc0c58667.png)
(2)已知点P为椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e78f1a9cc4dedc05c175ab99b288b9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c693bb58720477eb516fe4c541ac1857.png)
更新时间:2022-11-14 16:32:18
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【推荐1】椭圆、双曲线、抛物线三种圆锥曲线有许多相似性质.比如三种曲线都可以用如下方式定义(又称圆锥曲线第二定义):到定点的距离与到定直线的距离之比为常数e的点的轨迹为圆锥曲线.当
为椭圆,当
为抛物线,当
为双曲线.定点为焦点,定直线为对应的准线,常数e为圆锥曲线的离心率.依据上述表述解答下列问题.
已知点
,直线
动点
满足到点F的距离与到定直线l的距离之比为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/2022/4/15/2958536665874432/2961538140667904/STEM/e6022d0b-907b-40f7-9864-a35e4389edc3.png?resizew=164)
![](https://img.xkw.com/dksih/QBM/2022/4/15/2958536665874432/2961538140667904/STEM/cafe841f-59f3-485f-a431-ba4b91e1b685.png?resizew=182)
(1)求曲线
的轨迹方程;
(2)在抛物线中有如下性质:如图,在抛物线
中,O为抛物线顶点,过焦点F的直线交抛物线与A,B两点,连接
,
并延长交准线l与D,C,则以
为直径的圆与
相切于点F,以
为直径的圆与
相切于
中点.那么如图在曲线E中是否具有相同的性质?若有,证明它们成立;若没有,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42b7ac29311c13aa538f3f48cb513b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09dbcaa127022fbd6b6f13345196408a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a58c44592477e5cab15cd165ff9b3d78.png)
已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ba2238d6afe0187534155dd9ac48c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495bb3e5a3a9d35f5c9f0cf1f5d51876.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/2022/4/15/2958536665874432/2961538140667904/STEM/e6022d0b-907b-40f7-9864-a35e4389edc3.png?resizew=164)
![](https://img.xkw.com/dksih/QBM/2022/4/15/2958536665874432/2961538140667904/STEM/cafe841f-59f3-485f-a431-ba4b91e1b685.png?resizew=182)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)在抛物线中有如下性质:如图,在抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
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【推荐2】已知点
是圆
:
上任意一点,
是圆
内一点,线段
的垂直平分线与半径
相交于点
.
(1)当点
在圆上运动时,求点
的轨迹
的方程;
(2)设不经过坐标原点
,且斜率为
的直线
与曲线
相交于
,
两点,记
,
的斜率分别是
,
.当
,
都存在且不为
时,试探究
是否为定值?若是,求出此定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/553360f0476d7533adfae3d0e862946b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d026d2298b74855ce6b9550ed60bcb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(1)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设不经过坐标原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4757181824e15e0f21e5bdd55448783.png)
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【推荐1】已知双曲线E:
的右焦点为
,一条渐近线方程为
.
(1)求双曲线E的方程;
(2)是否存在过点
的直线l与双曲线E的左右两支分别交于A,B两点,且使得
,若存在,求出直线l的方程;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b856a35984c7a625a5c3e1c9b8b4ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/697c20fca284394bf5d5b9e5f6d952e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3960b496f1bf6ef2b07963106f016e.png)
(1)求双曲线E的方程;
(2)是否存在过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d981eca505f4e7cb144e24803f5cb88a.png)
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【推荐2】(1)求焦点在
轴上,离心率为
,短轴长为
的椭圆的标准方程;
(2)求经过点
,且渐近线方程为
的双曲线的标准方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41322821ce31416fdac8dd6e0aa41c71.png)
(2)求经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f13f28d079c2d6e6622df37e4cf13424.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f10273b05ad8210d8db07639c4d149fd.png)
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