名校
解题方法
1 . 已知直线和点
,点
到直线
的有向距离
用如下方法规定:若
,
,若
,
.
(1)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04cd247d6eb7602b2fb813e961cb0981.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8daba713e9d94a65871022d310c8baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1eb516bff5a0ec1cad530c8dce3cbc7.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ea1f5bdd213c7c3a571b4c38850bf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bc6e35f01f01a7b1afedb7b1b8c4bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a4cb1e1e4befa6939d2c121fb0b4a36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
(3)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17a6bc81f2ed0a56e65beefbe220da1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fff6e7e2b9f2b68b1647f6350b98dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f36aa5f1ba38dad6932617f92ce1e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f2813ee8f26cca880b6427f5f545d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/144d8ebcb3add5def7d045c73a5ba4cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a5c1168539f25962374b48170d46730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
2023-01-02更新
|
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2 . 在平面直角坐标系
中, 设点
, 点
与
两点的距离之和为
为一动点, 点
满足向量关系式:
.
(1)求点
的轨迹方程
;
(2)设
与
轴交于点
(
在
的左侧), 点
为
上一动点 (且不与
重合). 设直线
轴与直线
分别交于点
,取
,连接
,证明:
为
的角平分线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3933c6a5b045c5e8f0a33ad569b76c82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba9159195d6006db96d78578b7f1cfc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/440981bbf50be4ff25fb266f8b968c80.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d687f47eed34e5a59e557f6aacf433d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbbbc9c5353894f2c93c205c3ac04f03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/813597f052c8930e12f0a22aeaa3cce1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cf2130848c57fdbb994e41f107329b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cf2130848c57fdbb994e41f107329b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/529720d009eb609884234e36b7914251.png)
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2022-09-23更新
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