曲线
的方程是
,则曲线
被坐标轴所截的线段长![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c98c59cd4749afdd21e73529fc84323.png)
___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b626c291180568426844d8ababfda3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c98c59cd4749afdd21e73529fc84323.png)
更新时间:2019-12-04 14:28:53
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【知识点】 参数方程化为普通方程解读
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【推荐1】(坐标系与参数方程选做题)若以直角坐标系的
轴的非负半轴为极轴,曲线
的极坐标系方程为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a909df442c196074eb980d1f4e21b245.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af19cfb4b649e8c9b85b9988c04533c1.png)
,直线
的参数方程为
(
为参数),则
与
的交点A的直角坐标是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a909df442c196074eb980d1f4e21b245.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af19cfb4b649e8c9b85b9988c04533c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a4a0da075365acdf06cc968ee3c25c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19d5779cf54485b9acff014d9b62d947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
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【推荐2】以直角坐标系的原点为极点,
轴非负半轴为极轴,建立极坐标系,在两种坐标系中取相同的单位长度,点
的极坐标为
,曲线
的参数方程为
,则曲线
上的点到点
距离的最大值为___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e749259c8536b576febec58d2729195.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4583cc0a2495c8cf5f3bd380d0b5ca2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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