设有一条光线从
射出,并且经
轴上一点
反射.
(1)求入射光线和反射光线所在的直线方程(分别记为
);
(2)设动直线
,当点
到
的距离最大时,求
所围成的三角形的内切圆(即:圆心在三角形内,并且与三角形的三边相切的圆)的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a41d89bd1a8632f4017291805507442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08c897e58d51c4535a8d7e1b317f4555.png)
(1)求入射光线和反射光线所在的直线方程(分别记为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50297ad9f7256b4d2efc3462289f18b7.png)
(2)设动直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ceca31334bae02f73237eba535f052d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6820e9b58b4bba5b4f59c45c8e281ae9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/397250294d3ac7c283c0c690f0163d90.png)
更新时间:2017-04-11 17:49:28
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【推荐1】已知两定点
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【推荐2】过点
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【推荐3】如图,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f218ffffbe34629983f0c71c9ca53b72.png)
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(1)求直线CD的方程;
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4fce41daba0da15b6b7fa1292a38789.png)
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【推荐1】过点
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