1 . 给定双曲线
,过它的一个焦点作直线
,交C于点
分别为C的实轴端点.求证:对于任意满足条件的l,
的交点在一条定直线上,给出该直线方程并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6669e2262175d6d76414c52ae8ade275.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a59a52c88d08d333fcce816f481011e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bbdb45c4a2eda1d98f6bed1e368d015.png)
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2 . 给定由正整数组成的数列![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80ef842458c67bd274549d90e916e5ac.png)
(1)求证:数列相邻项组成的无穷个整点
均在曲线
上.
(2)若设
,证明:
整除
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80ef842458c67bd274549d90e916e5ac.png)
(1)求证:数列相邻项组成的无穷个整点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4700f448e5e421847effc897502aba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4db3ae18875992d69a104310d7b12a6d.png)
(2)若设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbc2f2c80dfac0c350de25cd20e9c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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2024高三·全国·专题练习
3 . 如图,在平面直角坐标系
中,M,N分别是椭圆
的顶点,过坐标原点的直线交椭圆于P,A两点,其中P在第一象限,过P作x轴的垂线,垂足为C,连接AC,并延长交椭圆于点B,设直线PA的斜率为k.对任意
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d80b861ba40387cb2bcd04945f5a371a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83640592853a53872d7af69c0cffc1bb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/11/a588c886-fd20-45b5-beb5-508af729f3e7.png?resizew=156)
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解题方法
4 . 已知抛物线C:
,过点
的直线l交抛物线于P、Q两点,以OP、OQ为邻边作平行四边形OPRQ.
(1)求点R的轨迹方程.
(2)是否存在l,使四边形OPRQ为正方形?证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a23e87d16c32b5aa4357f481b5808a0.png)
(1)求点R的轨迹方程.
(2)是否存在l,使四边形OPRQ为正方形?证明你的结论.
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2023高三·全国·专题练习
5 . 若实数
,
,
两两不等,且
,
,证明
,并由本结论说出
的一条几何性质.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a081b7a43e94312031f2bd1357defb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72e44017e74a651ae0e50ebf20f4191a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b9893e5d5836dc60ec5f25c723fd02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5894f0258b4b0acb81412de25a8478de.png)
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名校
解题方法
6 . 在平面直角坐标系
中,设二次函数
的图像与两坐标轴有三个交点,经过这三个交点的圆记为C.
(1)求实数b的取值范围;
(2)请问圆C是否经过某定点(其坐标与b无关)?请证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa8acaf5a9115e6adca8cab1e9faa6e3.png)
(1)求实数b的取值范围;
(2)请问圆C是否经过某定点(其坐标与b无关)?请证明你的结论.
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7 . 如图,已知
内接于抛物线
,且边
所在直线分别与抛物线
相切,F为抛物线M的焦点.求证:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/9363e490-d4f9-4149-82da-1203d0f10886.png?resizew=200)
(1)边
所在直线与抛物线M相切;
(2)A,C,B,F四点共圆.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854f480c60b88b546cb15d3b5622e212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12bc980a6ff5fe01b746c65af072a05e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19409d6d120387b3bccd934c4911bb45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd646f98b097a1b09f0b8a76ec399340.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/9363e490-d4f9-4149-82da-1203d0f10886.png?resizew=200)
(1)边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)A,C,B,F四点共圆.
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8 . 已知任意二次曲线S,
是曲线S的弦,O是
的中点,过点O任意作弦
、
,过点C、D、E、F另作一条任意二次曲线t,如果曲线t与直线
交于点P、Q,求证:
.
![](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/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/030c0325fde242e06cee8d270ba89d68.png)
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解题方法
9 . 已知椭圆
与双曲线
有四个交点,求证此四个交点共圆,并求出此圆的圆心坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c05acd02680b7668af585f42d0b44396.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/835780d6da1fb161f91158b392caf942.png)
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