解题方法
1 . (1)已知
,求函数
的最大值;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3697ec54c1e6516bb71f5b2431d1870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d4324640dea9a6267c8ed105823e513.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df837775edd0bc9adeb8560acb1c0ef6.png)
您最近一年使用:0次
解题方法
2 . 已知
,
,且
.
(1)求
的最大值,以及取最大值时
、
的值;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70333079f6699dd59d4887f06988f219.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/490f541b0feffbe5b2f0afd89b5b4270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a812617ffcdd770ec56a3325d9163c78.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f29d5f376c75c41ae6af0c8a8565449.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fcf9bfbf771cb6118f8e631724314e3.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b690a0373159e8a3cc70f3acee3c478d.png)
您最近一年使用:0次
2022-10-25更新
|
432次组卷
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4卷引用:江苏省南京师大附属实验学校2022-2023学年高一上学期期中数学试题
名校
解题方法
3 . 记
的内角A,B,C的对边分别为a,b,c,满足
.
(1)求证:
;
(2)若
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea5f2fdd4243b5cd48c8677004e5659.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/502491f4e48e1d74ca8cc709840c30b0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8792eaab0b6464e5d07436c64aa751a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbe89d0ce747d21036a5ba5415a88d78.png)
您最近一年使用:0次
2022-05-03更新
|
730次组卷
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2卷引用:江苏省扬州市邗江中学2022-2023学年高三上学期12月月考数学试题
名校
解题方法
4 . 已知集合
.
(1)设
,求
的取值范围;
(2)对任意
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3126abde8690cafa94819e739cadb0c3.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97b8566a40f14d08747cf11c200a2227.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad481cbfb67ac9cdbc0537f3de23b022.png)
(2)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e653f3a8c74ecc2721e5f12ef8771f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0282c5c4d8869673d876dd6a9fe29210.png)
您最近一年使用:0次
2022-08-02更新
|
595次组卷
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2卷引用:江苏省南通市如皋中学2021-2022学年高一上学期期末数学试题
名校
解题方法
5 . 在
中,
、
、
的对边分别为
、
、
,其中边
最长,并且
.
(1)求证:
是直角三角形;
(2)当
时,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f152c45ab64d2d6fc06c8dca135aa52.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2021-12-01更新
|
2043次组卷
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8卷引用:11.2正弦定理(第3课时)-【上好课】2021-2022学年高一数学同步备课系列(苏教版2019必修第二册)
(已下线)11.2正弦定理(第3课时)-【上好课】2021-2022学年高一数学同步备课系列(苏教版2019必修第二册)(已下线)增分专题二 解三角形范围与最值问题(已下线)6.4 平面向量的应用(已下线)第一次月考押题预测卷(考试范围:第六-七章)(已下线)第6章 平面向量及其应用(单元基础卷)-2021-2022学年高一数学考试满分全攻略(人教A版2019必修第二册)甘肃省民勤县第一中学2021-2022学年高一下学期第一次月考数学试题沪教版(2020) 必修第二册 堂堂清 第六章 复习检测六(已下线)第21节 解三角形
6 . 如图,点
是以
为直径的圆上的动点(异于
,
),已知
,
,
平面
,四边形
为平行四边形.
![](https://img.xkw.com/dksih/QBM/2020/6/22/2490381246193664/2490746127097856/STEM/ad3007d86d5048ebaec9590e22f1603b.png?resizew=152)
(1)求证:
平面
;
(2)当三棱锥
的体积最大时,求平面
与平面
所成的锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c64f5f11748e0277788dd252ac62d57d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/477dc280b77f5640565dbc0ddf24460a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dafb1a0ad813ac32b1d3f9c408f623d.png)
![](https://img.xkw.com/dksih/QBM/2020/6/22/2490381246193664/2490746127097856/STEM/ad3007d86d5048ebaec9590e22f1603b.png?resizew=152)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
(2)当三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf81f142b84adcf278b51c62c88e6afc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
2020-06-23更新
|
1604次组卷
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5卷引用:江苏省南通市海安市立发中学2022-2023学年高三上学期九月检测数学试题