解题方法
1 . 如图,在四棱锥
中,底面
是平行四边形,
分别为
的中点.
(1)求证:
平面
;
(2)设
平面
,
,再从条件①、条件②这两个条件中选择一个作为已知,求异面直线
与
所成角的余弦值.
条件①:
;条件②:
.
注:如果选择条件①和条件②分别解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433330447c4947540b3dc52719659681.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/31/d8cbad7c-4515-489e-bfa7-d72d799b1d46.png?resizew=177)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048ff3957289cd5601bcc7d50187e45c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
条件①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1be642ddd61c3ad26bcbe2dc42e3512.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5f0e2cc2158bd508edd68e05a892b.png)
注:如果选择条件①和条件②分别解答,按第一个解答计分.
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名校
2 . 已知函数
.
(1)判断
的奇偶性,并用定义证明;
(2)判断
在区间
上的单调性,并用函数单调性定义证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa6faa40a5db45ed2ef1cb9bd7730791.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/2b351ac1e1ee3320fc5bd49db86cade8.png)
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2023-11-07更新
|
443次组卷
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8卷引用:内蒙古自治区兴安盟乌兰浩特第一中学2023-2024学年高一上学期期中考试数学试题
3 . 已知数列
满足
,
,设
.
(1)证明数列
为等比数列;
(2)求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8850c9cc975fd77f8a57ffda16ab3598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/980d51ba3340a31964fbec9e6f243ca6.png)
(1)证明数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c93d6098c39165fbc5d7da079f629d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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解题方法
4 . 已知函数
(
,且
).
(1)求函数
的定义域,判断函数
的奇偶性并予以证明;
(2)当
时,求使
的
取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d71085f26ecda4419fb9e70a1257ea0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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2024-01-10更新
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513次组卷
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4卷引用:内蒙古自治区呼和浩特市2023-2024学年高一上学期期末教学质量检测数学试卷
5 . (1)求
的值.
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79924347bba3fb0d5d4b8cddba605ce6.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40741686c62be2f272e2f2ced4febbfe.png)
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名校
解题方法
6 . 不等关系是数学中一种最基本的数关系,生活中随处可见.例如.已知
克糖水中含有
克糖
,再添加m克糖
(假设全部溶解),糖水变甜了.
(1)请将这一事实表示为一个不等式.并证明这个不等式成立:
(2)利用(1)中的结论证明:若
为三角形的三边长,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc46a72bb9d2bff2372571b3d27c838.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bcaceadc00d891e292c8bdff9e4ce64.png)
(1)请将这一事实表示为一个不等式.并证明这个不等式成立:
(2)利用(1)中的结论证明:若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01721633154e61aa2650bf0b8b10e666.png)
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2023-09-24更新
|
491次组卷
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4卷引用:内蒙古赤峰二中2023-2024学年高一上学期第一次月考数学试题
内蒙古赤峰二中2023-2024学年高一上学期第一次月考数学试题吉林省长春市东北师范大学附属中学2023-2024学年高一上学期第一次阶段考试数学试题(已下线)专题05 集合与不等式综合大题归类(已下线)第二章 一元二次函数、方程和不等式-【优化数学】单元测试能力卷(人教A版2019)
解题方法
7 . 已知正数a,b满足
;
(1)求ab的最大值;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0d34836cf6d21bcadd4f60793ba150.png)
(1)求ab的最大值;
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/296a77a7ca3e70fba643654bf5a99a3b.png)
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2023-10-12更新
|
354次组卷
|
5卷引用:内蒙古自治区呼和浩特市内蒙古师范大学附属第二中学2023-2024学年高一上学期10月月考数学试题
解题方法
8 . 若非零函数
对任意实数a,b,均有
,且当
时,
.
(1)求
的值.
(2)求证:①任意
,
.②
为减函数.
(3)当
时,解不等式
.
(4)若
,求
在
上的最大值和最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e56795767cf51aa987557d6be9d5838.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e541ea2f855f981c96207070683d388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d752d8db8a05b3ec7312f6ac8b64a07.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e38fffbc7ab9882480f4faa72390e23.png)
(2)求证:①任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51e817f37f5a814e856ebc4a16d676ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735a0b9be74f3ea55a9088fb0ea686de.png)
(4)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51e817f37f5a814e856ebc4a16d676ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8254a9fe09d5e3940ad8c1c1c62c105c.png)
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解题方法
9 . 如图,在正三棱锥
中,
分别为
的中点,
分别为
的中点.
(1)证明:
.
(2)若
,且四棱锥
的体积为
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374fe9986ebbc986fc422e514ab93a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d79eb551b8051aea9beeed2ce16f18f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/17/ec564761-4cb4-49d6-89d7-2e8a8f2962d3.png?resizew=170)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e7784be0caa2ffb58bbebf81fa127c1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c890cd159b8f2fd17d81722a994e4741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f009b3506c406619b67667af613b7fed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d30997b9f63864aaea62a9831c714dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ce50ba5e349425274f05d46d120a74.png)
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2023-07-13更新
|
274次组卷
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2卷引用:内蒙古自治区巴彦淖尔市2022-2023学年高一下学期期末考试数学试题
解题方法
10 . 已知
,
.
(1)解不等式
;
(2)判断并证明函数
的单调性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec5c8dcdeb8d4250a258a2f9fee0948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d0b969f58a09dff5c32b43219e2080.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d7d19907517d724ba9d3db9096b3112.png)
(2)判断并证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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