名校
解题方法
1 . “大胆猜想,小心求证”是科学研究发现的重要思路.意大利著名天文学家伽利略曾错误地猜测“固定项链的两端,使其在重力的作用下自然下垂,那么项链所形成的曲线是抛物线”,直到17世纪,瑞典数学家雅各布.伯努利提出该曲线为“悬链线”而非抛物线并向数学界征求答案.其中双曲余弦函数coshx就是一种特殊的悬链线函数,其函数表达式为
,对应的双曲正弦函数
.设函数
,若实数满足不等式
,则m的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a7c1d3681898e25187a896aeb0c8c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0718c04bdf70989bcc90b902671a692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea9905b50cddf9ee3be34682094dcc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23aef7c23b08297f1d85900921f277a4.png)
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2023-02-19更新
|
294次组卷
|
3卷引用:四川省南充市2022-2023学年高一上学期期末数学试题
2 . 已知数列
满足
,
.
(1)求证:数列
为等差数列;
(2)求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e89bddd9c021a9caccc72cd0189e1ceb.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a44cfbb86a4eb76261c00ddc6bff181.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b040fc89872638210abc01b011d6018c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
名校
解题方法
3 . 已知定义域为
的函数
是奇函数.
(1)求
的解析式;
(2)判断
单调性,并用单调性的定义加以证明;
(3)若不等式
对任意的
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef9f333cee2ccb2b215d93011a162f7a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f3d3340eed3e13d74ed68876554b5d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2022-12-29更新
|
896次组卷
|
4卷引用:四川省仁寿县第一中学2021-2022学年高一上学期期末模拟考试数学试题
名校
解题方法
4 . 定义在
上的函数
,满足
,
,当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22cdbdd0d9522a9464fd67297fec752d.png)
(1)求
的值;
(2)证明
在
上单调递减;
(3)解关于
的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae4a2b3998705e51dbade9ada0873b2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25bea6d14c16f7c06e4e028f36131360.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ac9f1ca4ea5f9c1d8da0d72ea0a3f21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22cdbdd0d9522a9464fd67297fec752d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ce6155e181e21ce56ea658b70f8af17.png)
(2)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae4a2b3998705e51dbade9ada0873b2b.png)
(3)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6427b1c7b04019fa61f8ae7a8e1e2b.png)
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2022-11-23更新
|
712次组卷
|
5卷引用:四川省南充高级中学2022-2023学年高一上学期期末数学试题
四川省南充高级中学2022-2023学年高一上学期期末数学试题四川省泸州市泸县第四中学2023-2024学年高一上学期期末数学试题重庆市名校联盟2021-2022学年高一上学期第一次联考数学试题(已下线)第三章 函数的概念与性质(1b)速记·巧练(人教A版2019必修第一册)陕西省渭南市韩城市象山中学2023-2024学年高一上学期第三次月考数学试题
解题方法
5 . 若数列
满足
.
(1)求
、
、
及
的通项公式;
(2)若
,数列
的前n项和为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30063fd47a6af366e267ac296501b6b5.png)
(1)求
![](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/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae8faad43b5305bb2c10941b7aa7b2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5737f1f9cad2471f3ca53241b25a1eb9.png)
您最近一年使用:0次
6 . 已知数列
的前n项和为
,且
,
,
.
(1)求证:数列
是等比数列;
(2)求数列
的通项公式;
(3)若
(
),求实数t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.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/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50c5cf9cac00ea86c9c6524348e3fffd.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d82c65a855b1eed9c43e6829f6c3bffb.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a06cc34fdb7f4b0759c25522f5623b40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
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2022-07-12更新
|
582次组卷
|
2卷引用:四川省资阳市2021-2022学年高一下学期期末数学试题
名校
7 . 定义在区间
上的函数
,对
都有
,且当
时,
.
(1)判断
的奇偶性,并证明;
(2)判断
在
上的单调性,并证明;
(3)若
,求满足不等式
的实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d09dcbc6f4e0317fabb545af7d7c7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ba6e143efcc7436274fa619c996674.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711d6e4d873ff21b365e9ed00982447a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241553167658572549705dda8cd7c207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55d44fda81efe25ea99e98a26c0bd9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2022-12-20更新
|
1598次组卷
|
6卷引用:四川省成都市新都区新都香城中学2022-2023学年高一上学期期末数学试题
解题方法
8 . 如图,△ABC中,
,ABED是边长为2的正方形,平面ABED⊥底面ABC,若G、F分别是EC、BD的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/15/73476ccd-78c1-4620-9e18-ab3f656530ea.png?resizew=127)
(1)求证:
平面ADC;
(2)求证:GF⊥平面EBC;
(3)求三棱锥F-EBC的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6321a96e7f0768394f6932a121adc84e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/15/73476ccd-78c1-4620-9e18-ab3f656530ea.png?resizew=127)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b8c4ce6026a841c17f214dfba32285.png)
(2)求证:GF⊥平面EBC;
(3)求三棱锥F-EBC的体积.
您最近一年使用:0次
解题方法
9 . 如图,在正方体ABCD﹣A1B1C1D1中,E,F,G分别是棱AB,BB1,CC1的中点,又H为BE的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/18/fed01d33-eee8-496b-ac81-1d93d5dcfa96.png?resizew=174)
(1)证明:平面B1EG∥平面HFC;
(2)求直线EB1与CF所成角的余弦值;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/18/fed01d33-eee8-496b-ac81-1d93d5dcfa96.png?resizew=174)
(1)证明:平面B1EG∥平面HFC;
(2)求直线EB1与CF所成角的余弦值;
您最近一年使用:0次
解题方法
10 . 如图,已知直三棱柱
中,D,E,F分别为AC,
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/8ab0e165-a831-4131-a12c-7353ba064d71.png?resizew=158)
(1)求证:
平面ABC;
(2)若△ABC为等腰直角三角形,∠ABC=90°,且
.求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/8ab0e165-a831-4131-a12c-7353ba064d71.png?resizew=158)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a407b262c22419f73396170ecdc849.png)
(2)若△ABC为等腰直角三角形,∠ABC=90°,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d289a52b00154f78031af90afa02135.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047da2786ecd6c3b0248908e72593c66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf9628142422a4884bd59538da6d312.png)
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