名校
解题方法
1 . 笛卡尔在信中用一个能画出心形曲线的方程向公主表达爱意的故事广为流传,其实能画出心型曲线的方程有很多种.心形曲线如图所示,其方程为
,若
为曲线上一点,
的取值范围为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/18/9b169220-85ee-44a3-96b4-0161a2eedde4.png?resizew=177)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a76e73fc44b8fcc3ffb9bc269ae7bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/18/9b169220-85ee-44a3-96b4-0161a2eedde4.png?resizew=177)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-10-27更新
|
411次组卷
|
8卷引用:四川省绵阳市绵阳实验高级中学2024届高三上学期11月月考数学(文)试题
名校
解题方法
2 . 如图,某同学用两根木条钉成十字架,制成一个椭圆仪.木条中间挖一道槽,在另一活动木条
的
处钻一个小孔,可以容纳笔尖,
各在一条槽内移动,可以放松移动以保证
与
的长度不变,当
各在一条槽内移动时,
处笔尖就画出一个椭圆
.已知
,且
在右顶点时,
恰好在
点,则
的离心率为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/c8320702-1e97-4658-967f-4eab2c28e36d.png?resizew=188)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/300d23c67610bf941f57edf1359dfbb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/c8320702-1e97-4658-967f-4eab2c28e36d.png?resizew=188)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-05-04更新
|
1053次组卷
|
5卷引用:四川省成都市锦江区嘉祥外国语高级中学2023-2024学年高三上学期入学考试理科数学试题