1 . 已知直线
与圆
交于
两点,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fad8d7d3275c4d36b991727e3578a43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c424f7c2786a4c14d9efe94a065cefe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
A.2 | B.3 | C.4 | D.6 |
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7日内更新
|
391次组卷
|
3卷引用:专题08[2837] 平面解析几何
2 . 已知b是
的等差中项,直线
与圆
交于
两点,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20cda097a4e7c41100e573d8304ee066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f6e1f67dc15c3cf135a78af95c70fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c99fd44ea14ac1cf7707062a5a6debd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2401bc9c26cc3b0b8384c7139bd58fff.png)
A.1 | B.2 | C.4 | D.![]() |
您最近一年使用:0次
7日内更新
|
2929次组卷
|
5卷引用:专题08平面解析几何
3 . 已知直线
与圆
相交于
,
两点,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3683fd5cbf7b7bdef462a3d38ce4eff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9be2c91c4ace79b6d3ce4e86681f2b58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
A.若圆![]() ![]() ![]() |
B.![]() ![]() |
C.当![]() ![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() ![]() |
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4 . 已知抛物线
的焦点为F,C上一点
到
和到
轴的距离分别为12和10,且点
位于第一象限,以线段
为直径的圆记为
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
A.![]() |
B.![]() ![]() |
C.圆![]() ![]() |
D.若过点![]() ![]() ![]() ![]() ![]() |
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名校
解题方法
5 . 已知圆
:
,过点
的直线
与
轴交于点
,与圆
交于
,
两点,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5bef4132be669f94f3703898c75e2e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed1a65d88f9823d49da8f3b96ea9ec6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/61cbbcddb3801bcd6ff894fea10a0773.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-05-13更新
|
596次组卷
|
3卷引用:模型9 向量与圆问题模型
2024·全国·模拟预测
解题方法
6 . 已知圆
截直线
所得的弦长为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ae72a2898746867076a98abe9a92c2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ad174a5768cfdd353c18835c43f5a97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
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2024高三下·全国·专题练习
解题方法
7 . 已知点
在圆
上,直线
被该圆截得的弦长为2,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3654254401fc902c3cb4912969f21f88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1410414ebd007a6aebfb75240e2b458f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09dd083d0d52146a3232c6ac41e80d4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
A.![]() | B.![]() | C.2 | D.![]() |
您最近一年使用:0次
2024高三·全国·专题练习
解题方法
8 . 已知圆
,过圆外一点
引圆的两条切线
,切点分别为
,且
.
(1)求圆
的标准方程;
(2)若直线l的横截距为
,纵截距为
,直线l被圆C截得的弦长为
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67b2db23755330289155843868d25ea0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9778c14e65acc3bb59259c3c7e8782c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03df57efff473b3cfeb8503796b7d6b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线l的横截距为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c74a63a2ae88a5dcbcef31e49dae4b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8db9072d83111a58306c66b2c13d4410.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ee05b3210c8964deef8ff771173d288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f0281e6bbdbe08beeccb55adf84536.png)
您最近一年使用:0次
2024高三·全国·专题练习
9 . 已知直线l:
与圆C:
交于A,B两点,则
的面积可能为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f871359eaa2a4ce12d3ea436f15f9fb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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