已知直线
与双曲线
的右支交于不同的两点
和
,与
轴交于点
,且直线
上存在一点
满足
(
不与
重合).
(1)求实数
的取值范围;
(2)证明:当
变化时,点
的纵坐标为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c311b215f3c3144fbe11ffacf386b3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05ee700ae61a7ca6dd3881ed05ea34d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2baace5954154e2ea47c761a6bf7a59f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
更新时间:2023-05-29 20:12:20
|
相似题推荐
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】如图,双曲线
与抛物线
相交于![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40ba965228a5fcaba17ceeabbdcf897e.png)
,直线AC、BD的交点为P(0,p).
![](https://img.xkw.com/dksih/QBM/2013/7/11/1571272669290496/1571272674910208/STEM/8a863ff4b555496190535c4dec387d89.png)
(I)试用m表示![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7168226a4f07b20ea253cff0a3bc794.png)
(II)当m变化时,求p的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ab4582e8cb3efeab20103f71596cf99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bba168c1df9459524c445922203cd17d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40ba965228a5fcaba17ceeabbdcf897e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95850057bd95ee6273fb6db7659e99c.png)
![](https://img.xkw.com/dksih/QBM/2013/7/11/1571272669290496/1571272674910208/STEM/8a863ff4b555496190535c4dec387d89.png)
(I)试用m表示
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7168226a4f07b20ea253cff0a3bc794.png)
(II)当m变化时,求p的取值范围.
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【推荐2】已知
、
为双曲线:
的左、右焦点,点
在双曲线上,点
在圆
上.
(1)若
,求点
的坐标;
(2)若直线
与双曲线
及圆
都恰好只有一个公共点,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2d83d2851cd1e1cc542d8d0c4d1c473.png)
![](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/d4569ddc5bcf091264c8df01d764fe5f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f63582c5f5d5c08efb4abb03e5bacd96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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解答题-证明题
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真题
解题方法
【推荐1】已知双曲线
的右焦点为
,过点
的动直线与双曲线相交于
两点,点
的坐标是
.
(I)证明
为常数;
(II)若动点
满足
(其中
为坐标原点),求点
的轨迹方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5848e50805496263d52dcbde9671a89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb398137779190b35492d9f06d5fbc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3a423d71f06402f1fc3537ee3d68d81.png)
(I)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d33a6c62215cbde422370eff185763.png)
(II)若动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417354cbf6c9f232dd663c74aaada4ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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【推荐2】已知椭圆
,
分别为双曲线
的左,右顶点,
分别为
和
的离心率.
(1)若
.
(ⅰ)求
的渐近线方程;
(ⅱ)过点
的直线l交
的右支于
两点,
与直线
交于
两点,记
坐标分别为
,求证:
;
(2)从
上的动点
引
的两条切线,经过两个切点的直线与
的两条渐近线围成三角形的面积为S,试判断S是否为定值?若是,请求出该定值;若不是,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97e0898b9dbbf5d70cb2a59f6bb64e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffd1b28a414c44c1655c6a317e5261b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f994a876391534efe497dc115a53e3fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3d5d4af8df621f4011f7a8d7dcf6257.png)
(ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(ⅱ)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c7282b6e6f9893aa6a06a9c5529c9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03df57efff473b3cfeb8503796b7d6b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8454989732716850cb57ca15f8ef596.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75383df7710f292c218356a6987507fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7145f2ebe68c3b53fcb96fb17f9f423c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d9c396aa08378615623bc019d6a2831.png)
(2)从
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e908c815cc1d1ae8146ac56b7b7de5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
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【推荐1】已知双曲线
的右焦点为
是双曲线
上一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/12/cb864d1d-942e-4122-b18d-fcb323ec35cb.png?resizew=162)
(1)求双曲线
的方程;
(2)过点
作斜率大于0的直线
与双曲线的右支交于
两点,若
平分
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf071428606db3469b8deb62e728bb77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/12/cb864d1d-942e-4122-b18d-fcb323ec35cb.png?resizew=162)
(1)求双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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名校
解题方法
【推荐2】已知双曲线:
实轴
长为4(
在
的左侧),双曲线
上第一象限内的一点
到两渐近线的距离之积为
.
(1)求双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
(2)设过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60f2a72c6d7780757ab065fb29f47526.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
①为定值;
②为定值;
③为定值
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