1 . 已知圆
的方程为:
,点
,
,
是线段
上的动点,过
作圆
的切线,切点分别为
,
,现有以下四种说法:①四边形
的面积的最小值为1;②四边形
的面积的最大值为
;③
的最小值为
;④
的最大值为
.其中所有正确说法的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29610a3415c1e795d35979a5a9ff69f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc693a05f1f73d6d71667016e7d6094c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc693a05f1f73d6d71667016e7d6094c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6f268856e2fcb059176a98b5ae1a38f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6f268856e2fcb059176a98b5ae1a38f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
A.①③④ | B.①②④ | C.②③④ | D.①④ |
您最近一年使用:0次
2 . 过点
作圆
的两条切线,切点分别为
、
,给出下列四个结论:
①
;
②若
为直角三角形,则
;
③
外接圆的方程为
;
④直线
的方程为
.
其中所有正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2007972af3341f27fbc32ce62dfce5e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f270ad7747a1b1dd6d8946a9659955d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ccedfb9ac1ad9c15c15b1183012d32b.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53502463cc76201000e02df314e58769.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a5900719c2da83d76bef8c7a0abdf82.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53502463cc76201000e02df314e58769.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
④直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfadd876216894d8325d989e2573c567.png)
其中所有正确结论的序号为( )
A.②④ | B.③④ | C.②③ | D.①②④ |
您最近一年使用:0次
3 . 太极图是由黑白两个鱼形纹组成的图案,俗称阴阳鱼,太极图展现了一种相互转化,相互统一的和谐美.定义:能够将圆
的周长和面积同时等分成两部分的函数称为圆
的一个“太极函数”;下列有关说法中:
①对圆
的所有非常数函数的太极函数中,一定不能为偶函数;
②函数
是圆
的一个太极函数;
③存在圆
,使得
是圆
的太极函数;
④直线
所对应的函数一定是圆
的太极函数.
所有正确说法的序号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
①对圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560adea7b0d4fbe4131fc41f3fcbd871.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ebc992a2363c8b935e88c42d8be8dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a20244fede984b9282d22fad6c347ff.png)
③存在圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/272f769a07cc4e5488a804f890800b7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
④直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a07eb968ffb83f53fdeb4f1067797d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e0dbd83c0e31d221434ee26768d7f2d.png)
所有正确说法的序号是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/9/82202b01-9def-4e2d-af1a-ace245ce3c51.png?resizew=150)
A.①②③ | B.①②④ | C.②④ | D.②③ |
您最近一年使用:0次
名校
解题方法
4 . 考虑这样的等腰三角形:它的三个顶点都在椭圆
上,且其中恰有两个顶点为椭圆
的顶点.关于这样的等腰三角形有多少个,有两个命题:命题①:满足条件的三角形至少有12个.命题②:满足条件的三角形最多有20个.关于这两个命题的真假有如下判断,正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069ffc1e3936d254303d588e1a70a3aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.命题①正确;命题②错误. | B.命题①错误;命题②正确. |
C.命题①,②均正确. | D.命题①,②均错误. |
您最近一年使用:0次
5 . 已知抛物线
和点
,直线
与抛物线
交于不同两点
,
,直线
与抛物线
交于另一点
.给出以下判断:
①以
为直径的圆与抛物线准线相离;
②直线
与直线
的斜率乘积为
;
③设过点
,
,
的圆的圆心坐标为
,半径为
,则
.
其中,所有正确判断的序号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ac8fa800c00933279f2b20e5034438.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d161e8acdc95d6aa31000a5f4531f187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
①以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
③设过点
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277e0be448b4955903e81e8795e45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d98fd67fb21b6b30b12bc6f29efea17c.png)
其中,所有正确判断的序号是( )
A.①② | B.①③ | C.②③ | D.①②③ |
您最近一年使用:0次
2020-04-14更新
|
1365次组卷
|
5卷引用:2020届四川省广安市高三第二次诊断性考试试题理科数学试题