名校
解题方法
1 . 已知函数
与
的定义域为R,若对任意区间
,存在
且
,使
,则
是
的生成函数.
(1)求证:
是
的生成函数;
(2)若
是
的生成函数,判断并证明
的单调性;
(3)若
是
的生成函数,实数
,求
的一个生成函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4133958c09fdd82cda8838c9cf46ccda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71717fb069fa0f5a1d196b6484618351.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92c035964f2f9d1c84a91cc651fb5e4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b23eea271d1b00e358ca6dc048e8134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fad236fddf9598b319a1acd223a9269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4133958c09fdd82cda8838c9cf46ccda.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d761c4444f5eac17133caaf19d6b9ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01f4b87b2b2d6297cb330a6aa6a96c95.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c18e7d848da79e20188ed6a0225a0c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4133958c09fdd82cda8838c9cf46ccda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4133958c09fdd82cda8838c9cf46ccda.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4133958c09fdd82cda8838c9cf46ccda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aed37e8318fb8ca63e19e06dbcdd791.png)
您最近一年使用:0次
2023-05-05更新
|
572次组卷
|
4卷引用:第3课时 课后 函数的单调性(完成)
(已下线)第3课时 课后 函数的单调性(完成)上海交通大学附属中学2022-2023学年高一下学期期中数学试题湖南省长沙市明德中学2022-2023学年高一下学期5月月考数学试题(已下线)5.2.2 函数的单调性-数学同步精品课堂(沪教版2020必修第一册)
解题方法
2 . 计算三角比时,我们常会用到对称思想来解答.
例如:求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360fd195a7deaaa81b38a69c4ffdc108.png)
证明:设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e0bd9baaf6e9f693958259bf2c3d46.png)
,∴
,
而![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eed68d61dd8451c0f418bd29af01f3b.png)
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360fd195a7deaaa81b38a69c4ffdc108.png)
根据上述证法,计算下面两式的值:
(1)
;
(2)
.
例如:求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360fd195a7deaaa81b38a69c4ffdc108.png)
证明:设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e0bd9baaf6e9f693958259bf2c3d46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0064366ea74d49bd24afd69721fb2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc87ab4dbfdd85d997b2e28b0d789e41.png)
而
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eed68d61dd8451c0f418bd29af01f3b.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360fd195a7deaaa81b38a69c4ffdc108.png)
根据上述证法,计算下面两式的值:
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf8e62fba29d1ee28d5ad3f873a635b3.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797f8b8f08e427972eaf62ec8fc249c2.png)
您最近一年使用:0次
解题方法
3 . 如图,在直角梯形
中,
,
,
,并将直角梯形
绕AB边旋转至ABEF.
平面ADF;
(2)求证:直线
平面ADF;
(3)当平面
平面ABEF时,再从条件①、条件②、条件③这三个条件中选择一个作为已知,使平面ADE与平面BCE垂直.并证明你的结论.
条件①:
;
条件②:
;
条件③:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6045266f6db39e41b7abde762d9e9a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
(2)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d27ff0b39832f094ec51e28721d739.png)
(3)当平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
条件①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6166b9a5437671bcba31e17c375eb39.png)
条件②:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
条件③:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c182a9d9fd0a7023b710cd671d9468e7.png)
您最近一年使用:0次
2022-07-08更新
|
1280次组卷
|
11卷引用:8.6.1 空间直线、平面的垂直(精练)-2022-2023学年高一数学一隅三反系列(人教A版2019必修第二册)
(已下线)8.6.1 空间直线、平面的垂直(精练)-2022-2023学年高一数学一隅三反系列(人教A版2019必修第二册)北京市丰台区2021-2022学年高一下学期期末练习数学试题(已下线)模块三 专题9(劣构题)拔高能力练(北师大版)(已下线)模块三 专题9(劣构题)基础夯实练(人教B)(已下线)模块三 专题9(劣构题)拔高能力练人教A版)(已下线)模块三 专题10(劣构题)拔高能力练(苏教版)(已下线)专题06 空间中点线面的位置关系6种常考题型归类(1)-期期末真题分类汇编(北京专用)(已下线)7.2 空间几何中的垂直(精练)(已下线)7.1 空间几何中的平行与垂直(精讲)(已下线)高考新题型-立体几何初步(已下线)2023年高考全国乙卷数学(理)真题变式题16-20
解题方法
4 . 我们用
,
,
,…,
(
,且
)表示n个变量,就如同a、b、c、d、e、f等表示变量一样.已知
,
,
,…,
(
,且
)均为正数.
(1)求证:
;
(2)求证:
;
(3)请将命题(1)、(2)推广到一般情形(不作证明).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a40142c84be68ee2918c3a8303388c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59b2400d72b1e3145cb21ba719d8a968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a40142c84be68ee2918c3a8303388c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59b2400d72b1e3145cb21ba719d8a968.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2835f07a67db24eb20565e1e32f2aa1f.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4a1d6f90410fc3218dd4592465d647.png)
(3)请将命题(1)、(2)推广到一般情形(不作证明).
您最近一年使用:0次
2022高一·全国·专题练习
解题方法
5 . 证明:平行四边形两条对角线的平方和等于四条边的平方和.已知:平行四边形ABCD.求证:AC2+BD2=AB2+BC2+CD2+DA2.
您最近一年使用:0次
2022-04-14更新
|
262次组卷
|
6卷引用:6.2.2?向量的减法运算——课后作业(巩固版)
(已下线)6.2.2?向量的减法运算——课后作业(巩固版)(已下线)6.4.1 平面几何中的向量方法——课后作业(巩固版)(已下线)6.4.1向量在平面几何和物理的应用-【师说智慧课堂】课后作业(人教A版2019)(已下线)第05讲 平面向量的应用-《知识解读·题型专练》(人教A版2019必修第二册)(已下线)6.4.1平面几何中的向量方法+6.4.2向量在物理中的应用举例【第一练】“上好三节课,做好三套题“高中数学素养晋级之路(已下线)6.4.1 平面几何中的向量方法-高频考点通关与解题策略(人教A版2019必修第二册)
21-22高一·湖南·课后作业
解题方法
6 . 证明不等式:
(1)若
,
,
,
都是正数,求证:
;
(2)若
,
,
是非负实数,则
;
(3)若
,
是非负实数,则
;
(4)若
,
,则
.
(1)若
![](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/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2e7387a3fbab6508695365955f55258.png)
(2)若
![](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/b2d92a6b95fdfdedb405447340293bdc.png)
(3)若
![](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/727ff3ac24b506706045956c16336f94.png)
(4)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19339e3904e9541ff26b30ae5f1242b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4f58b9bc974b789928f6490acb43fb3.png)
您最近一年使用:0次
20-21高一·全国·课后作业
7 . 用向量的方法证明勾股定理.
![](https://img.xkw.com/dksih/QBM/2021/11/11/2849048816254976/2849569695244288/STEM/f2aa6811-7c22-4378-af86-92542db84e48.png?resizew=238)
(变式)
证明:已知在Rt△ABC中,∠C=90°,
求证:c2=a2+b2.
![](https://img.xkw.com/dksih/QBM/2021/11/11/2849048816254976/2849569695244288/STEM/f2aa6811-7c22-4378-af86-92542db84e48.png?resizew=238)
(变式)
证明:已知在Rt△ABC中,∠C=90°,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c286281b4edd2273190ec6a098444c.png)
您最近一年使用:0次
名校
8 . 我们知道,“有了运算,向量的力量无限”.实际上,通过向量运算证明某些几何图形的性质比平面几何的“从图形的已知性质推出待证的性质”简便多了.下面请用向量的方法证明“三角形的三条高交于一点”.已知
,
,
是
的三条高,求证:
,
,
相交于一点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
您最近一年使用:0次
2021-06-24更新
|
260次组卷
|
5卷引用:6.4.1 平面几何中的向量方法——课后作业(提升版)
(已下线)6.4.1 平面几何中的向量方法——课后作业(提升版)江苏省苏州实验中学、木渎中学、太仓中学2020-2021学年高一下学期5月联考数学试题江苏省苏州实验中学2020-2021学年高一下学期5月学情调研数学试题(已下线)专题6.3 平面向量的应用(练)- 2022年高考数学一轮复习讲练测(新教材新高考)(已下线)专题26 平面向量应用
解题方法
9 . 在钝角
中,三个内角为A,B,C,满足
.
(1)证明:
是等腰三角形;
(2)若延长
至D点,使得
,且
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c7cfa8af7b3ed2577c53b6ca8965b50.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35333abd7f02d663d15251bc5cbbf921.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2520e34084c7686762c476b60015b28.png)
您最近一年使用:0次
20-21高一·全国·课后作业
解题方法
10 . 求证:如果两个平行平面同时与第三个平面相交,那么它们的交线平行(根据如图写出已知、求证并加以证明).
![](https://img.xkw.com/dksih/QBM/2021/4/17/2701599047794688/2703433862283264/STEM/29ecd1acba9745c4b826f63b88862ee6.png?resizew=175)
您最近一年使用:0次