名校
1 . 已知
,则这三个数的大小关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9f240e910ccd1551938f51e76e7757.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2 . 点
将一条线段
分为两段
和
,若
,则称点
为线段
的黄金分割点.已知直线
与函数
的图象相交,
为相邻的三个交点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58615bd23ace29f63b9ad9462c026373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/629295a6586ebe4586a0825f5c66a7b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/644ffeda5b819d3714321c1264159fd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
A.当![]() ![]() ![]() ![]() |
B.对于给定的常数![]() ![]() ![]() ![]() |
C.对于任意的![]() ![]() ![]() ![]() |
D.对于任意的![]() ![]() ![]() ![]() |
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名校
解题方法
3 . 在
中,点
分别在边
上,
,若
交于点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf4bcde5a6cb5d00a24fdeab409d6484.png)
__________ ;当
时,
的面积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cca04b2a2b61d62a809776670a60c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee51da6f7594df55c2392c49ba478cba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6b0a3fa475b24f57ecd79c681259561.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf4bcde5a6cb5d00a24fdeab409d6484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d540c573a17490987b66aa76d135432f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43bcf9f1acfec083a5478b868efb9c2a.png)
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解题方法
4 . 定义两组数据
,
的“斯皮尔曼系数”为变量
在该组数据中的排名
和变量
在该组数据中的排名
的样本相关系数,记为
,其中
.
某校15名学生的数学成绩的排名与知识竞赛成绩的排名如下表:
(1)试求这15名学生的数学成绩与知识竞赛成绩的“斯皮尔曼系数”;
(2)已知在这15名学生中有10人数学成绩优秀,现从这15人中随机抽取3人,抽到数学成绩优秀的学生有
人,试求
的分布列和数学期望.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ae7c00ee60437d7056db158a57287f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d5d2984708e34c2f656b8a508d693f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49c3e347cec6bed59c813db91a7f69b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9454ddb2d570f884b15bd3ddf2a4545d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be3069959e6676e603dfa3494c66e6df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bbf83fbb1c900c35ce9a92ba5ed3749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/171102a883b22fe6ca578efc8926f5b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ce55632072eba85b2741b55fd154c6.png)
某校15名学生的数学成绩的排名与知识竞赛成绩的排名如下表:
![]() | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
![]() | 1 | 5 | 3 | 4 | 9 | 8 | 7 | 6 | 10 | 2 | 12 | 14 | 13 | 11 | 15 |
(1)试求这15名学生的数学成绩与知识竞赛成绩的“斯皮尔曼系数”;
(2)已知在这15名学生中有10人数学成绩优秀,现从这15人中随机抽取3人,抽到数学成绩优秀的学生有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
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名校
解题方法
5 . 已知函数
.
(1)求
的单调区间;
(2)若存在
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40ab948e5df77b57035f6b2717700858.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bce6919b54bfd657b21051aea01442d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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6 . 如图所示的几何体是圆锥的一部分,
为圆锥的顶点,
是圆锥底面圆的圆心,
是弧
上一动点(不与
重合),点
在
上,且
,
.
时,证明:
平面
;
(2)若四棱锥
的体积大于等于
.
①求二面角
的取值范围;
②记异面直线
与
所成的角为
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cafac5bb0e6d2bea4bd16b1f0d2e899a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0825161b7088d1415e8ed396cbe4007.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d709bff619f3b55f8adf43db0b53eae1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c142bcb49bf09788d4790b198b184b66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cceb0a3e6aaa2754aa3f67cfd13d1dde.png)
(2)若四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f28ba8a560e3b54f9346f2a6a805c016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004b3257c1daa6a54e90a349d3339926.png)
①求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/097ca5c5afa3d2598de2ef821906e438.png)
②记异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3a282d19bf2c827a98d4443330f7ca1.png)
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解题方法
7 . 已知
,则下列关系正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6af8ba99b462710a08004e80cbc53862.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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名校
8 . 数列
的前
项和为
,若
,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c19bf566cd9dd81916f53ed33248197c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9faad57128c31c9d3bb45e02e04e7f2.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
9 . 如图1,与三角形的一条边以及另外两条边的延长线都相切的圆被称为三角形的旁切圆,旁切圆的圆心被称为三角形的旁心,每个三角形有三个旁心.如图2,已知
,
是双曲线
的左、右焦点,
是双曲线右支上一点,
是
的一个旁心.直线
与
轴交于点
,若
,则该双曲线的渐近线方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a75995127d9f7edd5e5a7c0d442c4a21.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 若把函数
的图象平移,可以使图象上的点
变换成点
,则函数
的图象经此平移变换后所得的图象大致形状为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db929d2a696f5143d789726e28159560.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ecfca4a090b78015210871850538361.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1c61bf7032d0198ab25955d45ef9b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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