解题方法
1 . 已知圆C:
,直线l:
,若l与圆C交于A,B两点,设坐标原点为O,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ca01d1c400707e011745ad16199da13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ef6d00ddabcb1bb41fae534f5183ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df09bff72dab3e6555a0597b638a3bd0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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昨日更新
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2卷引用:辽宁省大连市部分学校2024届高三下学期联合模拟考试数学试题
解题方法
2 . 在平面直角坐标系
中,已知直线
:
与圆
:
交于
两点,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da08d6d27b6cf7ee1a9f49737bbb70de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a324c816e299f545ba3f31d37544d07d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a704469569b68ee11ab166dba3f686f0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 已知点
,圆
,若圆C上存在点P使得
,则a的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241ce9bd28046ce9b90f43b391132884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c47a1d70805d7fcf8a3074c8515f5f69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
4 . 已知平面向量
均为单位向量,且
,若
,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87f0ca6032f85abf58764ccaafd40bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5af70c2a213ed4632100dc5c3fb07bde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83634e314df24df73ae37d25a44d20e3.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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5 . 已知
是圆
上的一个动点,直线
上存在两点
,使得
恒成立,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560adea7b0d4fbe4131fc41f3fcbd871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5754303c50e412d0757a32f1abbb0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96cf4e0597c02b029561a2d6d82a2ad4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 已知P是过
,
,
三点的圆上的动点,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b62194097ac66a5093c57fca2f5b4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2102633b64c517e27d9be1afaebb1b48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d2ce4b046f190ff25bbefa1dc6f5c12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f625aa2ab29879c1df77417e9c1cf71.png)
A.![]() | B.![]() | C.5 | D.20 |
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2024-05-22更新
|
1390次组卷
|
3卷引用:云南省大理白族自治州民族中学2023-2024学年高三下学期5月月考数学试卷
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7 . 圆心为
,且与直线
相切的圆在x轴上的弦长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad20e2bc6576fc461419f8f138d26e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15fd0ef39b1061d76e79eaf71a5cf03f.png)
A.2 | B.4 | C.![]() | D.![]() |
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2024-05-08更新
|
617次组卷
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5卷引用:陕西省西安市第一中学2023-2024学年高三下学期4月月考理科数学试题
陕西省西安市第一中学2023-2024学年高三下学期4月月考理科数学试题陕西省西安市第一中学2023-2024学年高三下学期4月月考文科数学试题湖北省名校教研联盟2023-2024学年高三下学期4月联考数学试题(新高考卷(已下线)宁夏回族自治区银川一中2024届高三下学期第四次模拟数学(文)试卷宁夏回族自治区银川一中2024届高三下学期第四次模拟考试数学(文)试卷
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8 . 已知动点
在抛物线
上,点
,
为坐标原点,若
,且直线
与
的外接圆相切,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c42d88e496a17562d25195301e0ac2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a81d1219ca54df5a5def54697feff40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07a0924538cf37276a24e262a9528b89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9231260a2de7949154b7244bf70785c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/066ea7c8dac31105aadedad5f34d93fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
A.![]() | B.![]() ![]() | C.![]() ![]() | D.2或![]() |
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9 . 如图,已知在
中,
,
是
边上一点,且
,将
沿
进行翻折,使得点
与点
重合,若点
在平面
上的射影在
内部及边界上,则在翻折过程中,动点
的轨迹长度为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4bb0cc36a05dda3725f4b3b03a7feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb08f6a798dc293f3d8de281190f65e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d78fc7fcb2762de28dcef8aa3aa0e49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024·全国·模拟预测
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10 . 已知集合
,集合
,则
的子集个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d964fc7505cd0c2608d43bcc04cd56ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c431e8140c890e9905f14bd5c6eae85f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
A.8 | B.3 | C.2 | D.1 |
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