21-22高二·全国·课后作业
解题方法
1 . 已知曲线
.
(1)说明曲线C是什么图形,并画出该图形;
(2)直线
经过点
,与曲线C交于M,N两点,且点A是线段MN的中点,求直线
的方程;
(3)直线
与曲线C交于M,N两点,且
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eea6c9f91f0313617b0dac9594afa44c.png)
(1)说明曲线C是什么图形,并画出该图形;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe9c329cc0c653244ce8e6c93dd0d7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acd55f837e9c4e6bba1163ef13edd09b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5640e0a7b3a8755fb8ede22f65388d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2 . 已知曲线
.
![](https://img.xkw.com/dksih/QBM/2021/3/25/2685374732812288/2687018477101056/STEM/fa6461db-3861-4510-bcf7-70df55970bed.png?resizew=283)
(1)画出曲线C的图像;
(2)若直线
与曲线C有两个公共点,求k的取值范围;
(3)若
,Q为曲线C上的点,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2342e17a0b90b9bb6e4f3e62347d103a.png)
![](https://img.xkw.com/dksih/QBM/2021/3/25/2685374732812288/2687018477101056/STEM/fa6461db-3861-4510-bcf7-70df55970bed.png?resizew=283)
(1)画出曲线C的图像;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb0d6d0cfe389abca252332223b5da17.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82c1e84907c4fb352a88daac7810959e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82358b724051b032c7ec734a226ae84.png)
您最近一年使用:0次
2021-03-27更新
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186次组卷
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3卷引用:上海市华师大三附中2021届高三下学期第一次阶段检测数学试题