1 . 已知过点
的圆的圆心M在直线
上,且y轴被该圆截得的弦长为4.
(1)求圆M的标准方程;
(2)设点
,若点P为x轴上一动点,求
的最小值,并写出取得最小值时点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643b31966f52a03f001f2e613cd701dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9a9b769d70cb6f29e965c800921c8ea.png)
(1)求圆M的标准方程;
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14870d1e2812beaaa55d05966bef0116.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed1b3031d7393a63719166285314d73f.png)
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2022-01-24更新
|
585次组卷
|
5卷引用:浙江省宁波市九校2021-2022学年高二上学期期末联考数学试题
2 . 经过点
,
和直线
上一动点
作圆
,则有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d295a4cc3a58f9f38ee98337313c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7291b3d921f595f28960abcdce6dfbed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
A.圆![]() ![]() | B.![]() ![]() |
C.圆![]() ![]() ![]() | D.圆心![]() |
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2021-12-23更新
|
368次组卷
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3卷引用:浙江省北斗星盟2021-2022学年高二上学期12月阶段性联考数学试题
浙江省北斗星盟2021-2022学年高二上学期12月阶段性联考数学试题(已下线)第一次月考押题卷(考试范围:第1章、第2章)(拔高卷)-【单元测试】2022-2023学年高二数学分层训练AB卷(苏教版2019选择性必修第一册)江苏省淮安市2023-2024学年高二上学期期初调研测试数学试题
名校
3 . 在数学中有这样形状的曲线
:
,以下说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e04720ecc25ad8e71f2628c2ee0c674.png)
A.曲线![]() ![]() ![]() |
B.![]() ![]() |
C.曲线![]() |
D.![]() ![]() ![]() ![]() ![]() |
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4 . 已知点集
,当
取遍任何实数时,
所扫过的平面区域面积是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eeb91f8e88afa4dc07b8f54fab9a88d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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20-21高三下·浙江·期末
解题方法
5 . 在复平面中原点为O,已知A对应的复数为
,点B对应的复数为
,
,点C对应的复数为
,且
,且B,C均在实轴上方,
(1)求
的取值范围;
(2)当
时,P是线段
上的动点,求
的取值范围;
(3)求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f48d2b68f7480f35f9f2632564d1dd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52bb069b71ff58af8b36823d1af6a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a67a742d2a43e907fb1c3a1bdf1d6a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86d2d17663db4e87a6bc187a43700924.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b87e8cdf5716e8c4aa29de4d4bd6d7b6.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/223b6f16e1cdb3ab3d10905d7fa0a7bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73de3a47976a9e064dd7e3091894acc0.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b18c66c4e24d0475b2cd9ddc5e53540f.png)
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