名校
解题方法
1 . 已知点P为直线
上一动点,过点P作圆
的切线,切点分别为A、B,且
,则动点P的轨迹的长度为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c7bb1f0b885b791d9631c469460de69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb0645c57db9edc506030cefa465784f.png)
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2022-12-27更新
|
685次组卷
|
3卷引用:广东省东莞市2023届高三上学期期末数学试题
2 . 抛物线C:
的焦点为F,A为抛物线C上一点,若x轴、y轴被以A为圆心,AF为半径的圆截得的弦长分别为4,
,则p的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588c3822b7812e711b4ad86647b15dc1.png)
A.2 | B.4 | C.4或![]() | D.2或![]() |
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3 . 已知点
,动点M满足
,点M的轨迹为曲线C.
(1)求曲线C的轨迹方程;
(2)曲线C上任意一点N(不同于A,B)和点A,B的连线分别与y轴交于P,Q两点,O为坐标原点求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1e44e2b3635b65b4cbea0040b4151ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ebb8b94e291afeb15231060f0026c7.png)
(1)求曲线C的轨迹方程;
(2)曲线C上任意一点N(不同于A,B)和点A,B的连线分别与y轴交于P,Q两点,O为坐标原点求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3668b55ec6c015b1afe1aabb38392a35.png)
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4 . 过定点
作两条相互垂直的直线
、
,设原点到直线
、
的距离分别为
、
,则
的最大值是__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8473ebd0dd879f548f194e5e3daea289.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce619c464f2aa04178ea0111ba60544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce619c464f2aa04178ea0111ba60544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f8cdc826210c49d2b08f63a86470bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1960cce615c93a52b64079d2c0c1be23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833b1d6d5ea6ce31d551052b7a3b287f.png)
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2022高三·全国·专题练习
5 . 过点
作两条相互垂直的直线分别交圆
于
、
和
、
两点,则四边形
面积的最大值为__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11b61bb3b7fd37a02ead91ab70d1c408.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/287cb7499177edd064b4868cc76949c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289d7a880379d6060065c829b45b0ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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2022高三·全国·专题练习
6 . 棱长为36的正四面体
的内切球球面上有一动点
,则
的最小值为__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ccdb334598600a35388217d5f9656c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a59ac20d0ff43d950349019a6c2ff1f.png)
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2022高三·全国·专题练习
7 . 已知
是边长为2的正方形
的内切圆,
是
上任意一点,则
的最小值为__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb55fbd55d6f2bf7959f382d140d5a20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb55fbd55d6f2bf7959f382d140d5a20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c739543fc1d6a1158a51056fb66dbc4.png)
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2022高三·全国·专题练习
8 . 阿波罗尼斯(约公元前
年)证明过这样一个命题:平面内到两定点距离之比为常数
的点的轨迹是圆,后人将这个圆称为阿氏圆,已知
、
分别是圆
,圆
上的动点,
是坐标原点,则
的最小值是 __ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d671b358f4e5a8062e5b97f5c0555aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be776ec968ef225c21c030a535621bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eacd9c1ce5e65fec29c32f40d86b73d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a634b8bb6b61749ebdcbb1857ce7feef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74d2dbf32036c16107d82f5e9f62f881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/701f3b0e2bedfe5195443459072d798e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb086b6a35662c39159d1228bdd11f1.png)
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2022高三·全国·专题练习
9 . 在平面直角坐标系
中,对任意的实数
,集合
中的点
都不在直线
上,则集合
所对应的平面图形的面积为__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab4717e4827480f0f6f4ded85e52eab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55119eca952c0a1d27fb4ca06a02e09b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78bc6044b2bf40e42fd9dcd8789a901f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
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