名校
解题方法
1 . 如图,在边长为4的正三角形
中,
分别为
上的两点,且
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d03acb29a5812acad760d564d6c84be.png)
,
相交于点P.
的值;
(2)试问:当
为何值时,
?
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cca04b2a2b61d62a809776670a60c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc553ab786de1d90a1883911ada167ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d03acb29a5812acad760d564d6c84be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/699f8cdb31abb7223e6c46a4363fc691.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/268544817735d20ffbceef3b26db5dde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5f1c2b555afad1437765d55746c1924.png)
(2)试问:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4e22ba3e6e1c1d6b12d9b8baa8d1f02.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb330cc355b80d5f299a41f1a7e4e81.png)
您最近一年使用:0次
2024-06-08更新
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207次组卷
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2卷引用:安徽省安庆市、桐城市名校2023-2024学年高一下学期5月期中调研数学试题
2 . 若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636a8d9e362e768e825a98afdea2bd5b.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
3 . 现定义“
维形态复数
”:
,其中
为虚数单位,
,
.
(1)当
时,证明:“2维形态复数”与“1维形态复数”之间存在平方关系;
(2)若“2维形态复数”与“3维形态复数”相等,求
的值;
(3)若正整数
,
,满足
,
,证明:存在有理数
,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9dc4e868a310c371ff88075d8a966a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef9d830212489b316bb052455098108e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc8299790d98621b87e73212a2ebb91.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/905dd10639c9fef5ef8d66a124756140.png)
(2)若“2维形态复数”与“3维形态复数”相等,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c136aaf9b5dedec254a92ce302f4a70c.png)
(3)若正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94742ebbb028c50d7a58e3e8f4ab329c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35490c12e57ecd91af9934cb17b5c927.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ed110fbfeb14003270a1039ba174d0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f02f2606180ffeda602ff9ae747af6f.png)
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2024-05-11更新
|
518次组卷
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3卷引用:安徽省合肥市第一中学2023-2024学年高一下学期5月期中联考数学试题
2024高三下·天津·专题练习
解题方法
4 . 已知函数
.
(1)当
时,求
在点
处的切线方程;
(2)若对
,都有
恒成立,求
的取值范围;
(3)已知
,若
,
且满足
,使得
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b572d532418dd2e65b58235cefb449c.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
(2)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/191e3c845e90f229f3c992aff85b92db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d5293e346763d59b4e64ae0fd8f675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86363d44047e7a13439be95c5ada424f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d41acc47493556617fe7b9e55093d10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2037b0bad7c7a312bac1ac0653d9a491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500cc91e21777edad7e5a84668378daa.png)
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名校
解题方法
5 .
的内角A,B,C的对边分别为a,b,c,已知
,则
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3459b04466e706ab66beb40a9fe2d802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9e460c144f7a2141d2df0308b125f2.png)
您最近一年使用:0次
2024-03-14更新
|
975次组卷
|
3卷引用:安徽省安庆市第一中学2023-2024学年高一下学期第一次阶段检测数学试题
名校
6 . 已知函数
,
.
(1)若曲线
在
处的切线斜率为
,求
的值;
(2)讨论函数
的单调性;
(3)已知
的导函数在区间
上存在零点,求证:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bebf826591b9937b4250bbdd35af5726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2763b57a7399653fbded5264f0cee150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58411b65a71e9a452259eaf6ccea5313.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a91dd794bff1e721302074907b6ad.png)
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2024-04-16更新
|
596次组卷
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8卷引用:安徽省六安市裕安区新安中学2023-2024学年高二下学期期中数学试题
安徽省六安市裕安区新安中学2023-2024学年高二下学期期中数学试题天津北京师范大学静海附属学校 (天津市静海区北师大实验学校)2023-2024学年高二下学期第二次阶段检测(期中)数学试题天津市第九十五中学益中学校2023-2024学年高二下学期第二次学习情况调查数学试卷天津市西青区杨柳青第一中学2022-2023学年高二下学期第一次适应性测试数学试题天津市西青区杨柳青第一中学2023-2024学年高二下学期第一次质量检测数学试题云南省大理白族自治州民族中学2023-2024学年高二下学期4月月考数学试题宁夏回族自治区吴忠市青铜峡市第一中学2023-2024学年高二下学期4月月考数学试题天津市滨海新区塘沽第一中学2023-2024学年高二下学期第一次统练数学试题
7 . 椭圆
的左右焦点分别为
、
,短轴端点分别为
、
. 若四边形
为正方形,且
.
(1)求椭圆标准方程;
(2)若
、
分别是椭圆长轴左、右端点,动点
满足
,
点在椭圆上,且满足
,求证
定值(
为坐标原点);
(3)在(2)条件下,试问在
轴上是否存在异于
点的定点
,使
,若存在,求
坐标,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347b68f42934c74e0d759a67613a1da9.png)
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfffd420523729074995e9e55f464d4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71cbb78e8d813953529e8c7156efeb37.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/2/b1133eee-9265-46aa-8370-c815e316c9f0.png?resizew=200)
(1)求椭圆标准方程;
(2)若
![](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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94e9c33da123d45065865e6c3a8b1a20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3088904983f381dc8856244558f3f0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdc6b4cabc5200aa2162915a806ca99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(3)在(2)条件下,试问在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33023f4c86ba1b56ecf3b1dbc84f461a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
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解题方法
8 . 如图,在菱形
中,
分别为
的中点,将
沿
折起,使点
到点
的位置,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/10/f3a0747c-465b-4627-9cb2-82a18544b9ee.png?resizew=166)
(1)证明:平面
平面
;
(2)若
为线段
上一点,求
与平面
所成角的正弦值的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59bcedbd48c476d7ac29d914d50152f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481e426224c3a3ce9bb5a731eed81c40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e856c15c61d7cb6ebd8daef542a4e7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15721f71a6c8b071ff621f2ffe73e977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/10/f3a0747c-465b-4627-9cb2-82a18544b9ee.png?resizew=166)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f14406f15a251766f2066d0f1fa0a13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ce50ba5e349425274f05d46d120a74.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c802980d9d0cd03550a4a2972bd7ea1.png)
您最近一年使用:0次
名校
解题方法
9 . 如图所示.已知椭圆方程为
,F1、F2为左右焦点,下列命题正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/7/af38fe5b-b514-4a59-a04d-be2df7d84512.png?resizew=194)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347b68f42934c74e0d759a67613a1da9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/7/af38fe5b-b514-4a59-a04d-be2df7d84512.png?resizew=194)
A.P为椭圆上一点,线段PF1中点为Q,则![]() |
B.直线![]() ![]() ![]() ![]() |
C.若椭圆上存在一点M使![]() ![]() |
D.四边形 ![]() |
您最近一年使用:0次
2023-12-02更新
|
261次组卷
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3卷引用:安徽省黄山市八校联盟2023-2024学年高二上学期期中考试数学试题
名校
10 . 已知圆
与圆
,则下列说法正确的是
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c1c01121e7c2a52ebe672eeecc38840.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c691b4c8e9d3d50c179eb5850f930379.png)
![](https://img.xkw.com/dksih/QBM/2023/11/18/3370788760117248/3371178539253760/STEM/3f563d83b647455886b77838eb91139c.png?resizew=4)
A.圆![]() ![]() |
B.若圆![]() ![]() ![]() ![]() |
C.当![]() ![]() ![]() ![]() |
D.当![]() ![]() ![]() ![]() |
您最近一年使用:0次
2023-12-02更新
|
549次组卷
|
3卷引用:安徽省皖豫名校联盟2023-2024学年高二(上)期中考试数学试卷