名校
解题方法
1 . 卵圆是常见的一类曲线,已知一个卵圆
的方程为:
,
为坐标原点,点
,点
为卵圆上任意一点,则下列说法中正确的是________ .
①卵圆
关于
轴对称
②卵圆上不存在两点关于直线
对称
③线段
长度的取值范围是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9210e75c35fb455d0446eb7ddba7d79c.png)
④
的面积最大值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/407e34a89e07e42932753c24f022cc43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6ff81aedbefa935da289dc632e78eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
①卵圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
②卵圆上不存在两点关于直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b650820d7bed48ed67a2869ad8c65ff1.png)
③线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9210e75c35fb455d0446eb7ddba7d79c.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532d9de08698f61d7c010805c61a4ec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
您最近一年使用:0次
2023-02-21更新
|
603次组卷
|
2卷引用:北京市陈经纶中学2023届高三下学期综合练习一(开学考试)数学试题
名校
解题方法
2 . 作单位圆的外切和内接正
边形
,记外切正
边形周长的一半 为
,内接正
边形周长的一半 为
.计算可得
,其中
是正
边形的一条边所对圆心角的一半 .
给出下列四个结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/ea251299-5485-4843-960e-cb3a637aece9.png?resizew=338)
①
;②
;
③
;④记
,则
,
.
其中正确结论的序号是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbbc0cf9164007ddd298dd2236703f2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1143cc30cf9373205e699b915d5e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbbc0cf9164007ddd298dd2236703f2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbbc0cf9164007ddd298dd2236703f2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0bb73d42d4ad2a8134c7a6c91581cca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92ffa8be5a02790c6161c56b8e90db64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbbc0cf9164007ddd298dd2236703f2f.png)
给出下列四个结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/ea251299-5485-4843-960e-cb3a637aece9.png?resizew=338)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bbcdfd295d6ed60ec9ecdb3671afeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e51044a07a80e63076ce4a0fd253838.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38226cdcdc7cce860562662d9aa19377.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/831de7531e4b51f836a5ef44c4791198.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02efa6f1dc514a278597ed9ccfe42127.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24ea4440879559a69b0effb66f00701d.png)
其中正确结论的序号是
您最近一年使用:0次
2022-12-05更新
|
842次组卷
|
3卷引用:北京市中关村中学2024届高三上学期9月开学考试数学试题