已知线段AB的端点B的坐标是
,端点A在圆
上运动.
(1)求线段AB的中点P的轨迹
的方程;
(2)设圆
与曲线
的两交点为M,N,求线段MN的长;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a70feb95addc50c555e2eb6ad82521ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d637f00bbbc82d8f739adbdddf7b61.png)
(1)求线段AB的中点P的轨迹
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)设圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
更新时间:2022-11-10 09:49:18
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适中
(0.65)
【推荐1】已知点
在圆
上运动,点
为线段
的中点,设点
的轨迹为曲线
,
(1)求曲线
的轨迹方程.
(2)过点
作曲线
的切线
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(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8543a9925dffcc9c0c0e13cff19732a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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【推荐2】已知线段AB的端点B的坐标是
,端点A在圆
上运动,线段AB的中点为M.
(1)求M的轨迹方程;
(2)若
为M的轨迹上的任意一点,求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/238f0ea276a00ae8d681ce00cc11c8ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7a66df197e63b3120bf3aa3a367b0f.png)
(1)求M的轨迹方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12c0747102c76ecc985f639a0a77b4d4.png)
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【推荐1】圆
内有一点
,过P的直线交圆于A,B两点.
(1)当P为弦AB中点时,求直线AB的方程;
(2)若圆O与圆
相交于E,F两点,求EF的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/393a0e30b023f2a20d366eef481b5eea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/530e5817131adf2c05b99ff18eb9060f.png)
(1)当P为弦AB中点时,求直线AB的方程;
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e69a73cedc514e44f40c8b6cd40110.png)
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适中
(0.65)
【推荐2】已知圆
,点
为圆
上任意一点,点
,线段
的中点为
,点
的轨迹为曲线
.
(1)求点
的轨迹
的方程;
(2)直线
与圆
相交于
两点,求
的最小值及此时直线
的方程;
(3)求曲线
与
的公共弦长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b872134c19ea740c014d6771d235d83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ba5cbb31299d683ac6c7dd795db85.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbf63cf714648d34afef9c12adc63818.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
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解答题-问答题
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适中
(0.65)
【推荐3】在直角坐标系
中,曲线
:
(
为参数,
),在以坐标原点为极点,
轴的非负半轴为极轴的极坐标系中,曲线
:
.
(1)试将曲线
与
化为直角坐标系
中的普通方程,并指出两曲线有公共点时
的取值范围;
(2)当
时,两曲线相交于
,
两点,求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69cf89e94eb51129f144d9809ec290f7.png)
(1)试将曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
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