已知圆C:
,直线l:
.
(1)求证:对
直线l与圆C总有两个不同交点;
(2)设l与圆C交于不同两点A、B,求弦AB的中点M的轨迹方程;
(3)若定点
分弦
所得向量满足
,求此时直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd580f1e99fc16f8c3cda2bee6b2dc2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ccf32d6b4dea0906bb097f3083cd8bb.png)
(1)求证:对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf20597385a28788442454a0ab0c42bb.png)
(2)设l与圆C交于不同两点A、B,求弦AB的中点M的轨迹方程;
(3)若定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797c488729678e74e0825c2e92b544b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/696eee707c46b97e832ac5df8cbf4155.png)
更新时间:2016-12-03 17:04:30
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【推荐2】平面内给定三个向量
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【推荐3】已知向量
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【推荐1】已知圆
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【推荐1】在平面直角坐标系xOy中,设圆x2+y2-4x=0的圆心为M.
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.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
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【推荐2】已知圆C:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3eaf44e8fac880eec239aa55846f767.png)
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【推荐1】在平面直角坐标系
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【推荐2】求直线
被圆
截得的弦AB的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40da46314ca911fcf7347648cc63afc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f285c23bbc61f073e174b411d4116d0.png)
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