2014·江西上饶·二模
名校
1 .
的内切圆与三边
的切点分别为
,已知
,内切圆圆心
,设点A的轨迹为R.
![](https://img.xkw.com/dksih/QBM/2014/4/24/1571647475073024/1571647480971264/STEM/fb96fdc526b44c238e0bc1b73ac78521.png)
(1)求R的方程;
(2)过点C的动直线m交曲线R于不同的两点M,N,问在x轴上是否存在一定点Q(Q不与C重合),使
恒成立,若求出Q点的坐标,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9e661d825b7a6061e4d26fe5c53df73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/927456b0989846a2f1573844bbaa2105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63d9362578dd697795962a95e76f190.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e890c935cf69ebebf3bbb99c71fe73d.png)
![](https://img.xkw.com/dksih/QBM/2014/4/24/1571647475073024/1571647480971264/STEM/fb96fdc526b44c238e0bc1b73ac78521.png)
(1)求R的方程;
(2)过点C的动直线m交曲线R于不同的两点M,N,问在x轴上是否存在一定点Q(Q不与C重合),使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/463e98561852ef3e366f60ed4e12e646.png)
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14-15高三上·上海·期末
2 . 已知双曲线
的左右焦点分别是
,设P是双曲线右支上一点,
在
上的投影的大小恰好为
,且它们的夹角为
,则双曲线的渐近线方程为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e813e93867824493be55d6fac27a16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f8514ea4124b3a6e297842f7912282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71599e802899061075776f82abf8e504.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632cf1af460c8c90daac2c03024f72b8.png)
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真题
3 . 在平面直角坐标系
中,已知双曲线
.
(1)设F是C的左焦点,M是C右支上一点. 若|MF|=2
,求过M点的坐标;
(2)过C的左顶点作C的两条渐近线的平行线,求这两组平行线围成的平行四边形的
面积;
(3)设斜率为
的直线l2交C于P、Q两点,若l与圆
相切,
求证:OP⊥OQ;
![](https://img.xkw.com/dksih/QBM/2012/6/14/1570886267199488/1570886272860160/STEM/c96a88c11c7f4541ac6c11a71df22ed8.png)
![](https://img.xkw.com/dksih/QBM/2012/6/14/1570886267199488/1570886272860160/STEM/25814adb35d341818ae67f9bc3511a6c.png)
(1)设F是C的左焦点,M是C右支上一点. 若|MF|=2
![](https://img.xkw.com/dksih/QBM/2012/6/14/1570886267199488/1570886272860160/STEM/ec6c35e612194374bc39d17880a2e35e.png)
(2)过C的左顶点作C的两条渐近线的平行线,求这两组平行线围成的平行四边形的
面积;
(3)设斜率为
![](https://img.xkw.com/dksih/QBM/2012/6/14/1570886267199488/1570886272860160/STEM/07b5840f8cbd413b913ffeca0289c8e2.png)
![](https://img.xkw.com/dksih/QBM/2012/6/14/1570886267199488/1570886272860160/STEM/6abee543db7b43d097ad398e60db695e.png)
求证:OP⊥OQ;
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12-13高三上·上海虹口·期末
4 . 已知双曲线
的左、右焦点分别为
,
,
在双曲线上,且
,则点
到
轴的距离等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a44342c2ee26a279265225982499b71.png)
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5d73051a69eb8ee28050d482d1325e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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11-12高二上·福建三明·期中
名校
5 . 已知点
是双曲线
上除顶点外的任意一点,
分别为左、右焦点,
为半焦距,
的内切圆与
切于点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/001a8d23c94766cadc24d7525054d406.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a54279c4529827581bbeaa76c1beb437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643ef7d761de0e794fc39937dc72ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/001a8d23c94766cadc24d7525054d406.png)
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