名校
解题方法
1 . 如图,已知
矩形
所在的平面,
分别为
的中点,
.
(1)求证:
平面
;
(2)求
与面
所成角大小的正弦值;
(3)求证:
面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cca777c664ecc22e40dff4ccae6b248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91d0184876405c6315afe1f499f678f9.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93cf663ee2bf1ac5c43f4306fa0cf250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://img.xkw.com/dksih/QBM/2017/8/20/1756135659077632/1756952400584704/STEM/2ae7a50f58dd4ea7bf223d944b4913a0.png?resizew=227)
您最近一年使用:0次
2 . 已知数列
满足:
,
(
,
),设
.
(1)求证:数列
是等比数列,并求数列
的通项公式;
(2)求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2438f2272d7b7ab51dbbe587025a553d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4df6a7df8e4291fe5a3d72f26d5ee8ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16bbe7bd03d931004b80c38999c1d504.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd007cc79439d585b4ea8c94fb3809cb.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85b680de4285f824b160687087a6ea25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
解题方法
3 . 已知函数
是定义在
上的函数,且对于任意的实数
有
,当
时,
.
(1)求证:
在
上是增函数;
(2)若
,对任意的实数
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e63f1bd2ff616d22caea21e8b74a843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25bea6d14c16f7c06e4e028f36131360.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e63f1bd2ff616d22caea21e8b74a843.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8167890072067743bfaa5ea345d52f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/630dc2e5aa255e1b1e0fcd9044618172.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2016-12-04更新
|
570次组卷
|
2卷引用:四川省雅安市天立集团2023-2024学年高一上学期期中数学试题
11-12高三上·安徽蚌埠·期中
名校
4 . 已知函数
的定义域为
,且满足条件:①
,②
,③当
时,
.
(1)求证:函数
为偶函数;
(2)讨论函数
的单调性;
(3)求不等式
的解集
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/862df674d5668eb2c8d67c889866463f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd522b593f298eefe8bcdee91eaa16f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9da4fdfdddc259dcef9fdd4b826b64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(1)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdca97ec554fa71c8a539e4185656d84.png)
您最近一年使用:0次
解题方法
5 . 设数列
的前
项和为
,
,
,且
,
,
成等差数列.
(1)求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
(2)证明
为等比数列,并求数列
的通项公式;
(3)设
,且
,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79cf444f6b2cdd169ae242325c8accdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6d5791e7e0bd54d6433c1a4e1fecb7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
(2)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b1b04112db77069cb75ad66501d564.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65aa5028388c6f81381ed321e722f81a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0169440b0b0be2db79a149e6788c29b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02e80983b88cdf6b540502816c87d13.png)
您最近一年使用:0次
解题方法
6 . 已知数列
满足:
,
,
.
(1)求证:数列
为等差数列;
(2)求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb826b0eee0ec278a944d5c78685c050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b67cbb95937802a04449eb63f337e1a2.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f4fb09ebb10cf96b8755f8fed99a89.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ad8700c10ca761cf31e30f787790bd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2017-07-07更新
|
766次组卷
|
2卷引用:四川省资阳市2016-2017学年高一下学期期末考试数学试题
名校
7 . 如图,
平面
,
,
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2018/7/2/1979650087124992/1980375618846720/STEM/b8ea4144fd4b4d439fb11880d57d2517.png?resizew=252)
(Ⅰ)证明:
平面
;
(Ⅱ)求多面体
的体积;
(Ⅲ)求二面角
的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/689c065652544780be8b33ae92cbb6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aee33e4af8ef3bf5025d7e630abcfc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e975e7562572d24e6462e774f5fd491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a1be17e0a3e51cde1f50f384198e71e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2018/7/2/1979650087124992/1980375618846720/STEM/b8ea4144fd4b4d439fb11880d57d2517.png?resizew=252)
(Ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64389deddcdd1b7fd68b4d67778a13da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
(Ⅱ)求多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9beeedb7ddaac2cd3d37151d058ab7fb.png)
(Ⅲ)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/370148e9147aa25c60a07ab4ad46e83d.png)
您最近一年使用:0次
2017-08-13更新
|
2062次组卷
|
2卷引用:四川省泸州市2016-2017学年高一下学期期末考试数学试题
名校
8 . 已知定义域为
的函数
是奇函数.
(1)求
的值;
(2)证明:
在
上为减函数;
(3)若对于任意
,不等式
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bef7c31c51704f0a71d8deccf2812855.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12ff4a1f5d3ad9d7668fe555e70b774c.png)
(3)若对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f3243f7a4c70ee7b67a3cc952cb225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b883efc9efbaebe4afdead2b7a910205.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2017-03-22更新
|
1032次组卷
|
2卷引用:2016-2017学年四川省简阳市高一上学期期末检测数学试卷
9 . 如图,梯形
中,
,
,且
,沿
将梯形
折起,使得平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/21/0edd67c0-4f8c-41c0-ab01-f3b46ae9fe31.png?resizew=248)
(1)证明:
平面
;
(2)求三棱锥
的体积;
(3)求直线
与平面
所求的角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3e927b7b2383ccded03838ae8b30b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eed15d0ed75bf936f224f931da5d950.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/439989e16005cdeaf40fd60437bfef54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d5a164bf56f8fb92527ad78bc10ccf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5470335edde48868aa7243ed2b67170b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/21/0edd67c0-4f8c-41c0-ab01-f3b46ae9fe31.png?resizew=248)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8197bf06d017950c85c3ba6a291c095e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8379ddbd4f02ccfa502592cc4eeae4f1.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8768996ca9a0f2c5d9a19abbd54df.png)
您最近一年使用:0次
2017-07-07更新
|
1042次组卷
|
2卷引用:四川省简阳市2016-2017学年高一下学期期末考试数学(文)试题
10 . 已知数列
满足
,
,令
.
(Ⅰ)求证:
是等比数列;
(Ⅱ)记数列
的前n项和为
,求
;
(Ⅲ)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cefac0821e8fa39cad900df7ebb6e1c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c07cefac60bb3fcde0bded804501c90b.png)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
(Ⅱ)记数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/819bc4680859f96a1bd028a56db81211.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(Ⅲ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7909acec5d557a91bb5b4e409df8be8.png)
您最近一年使用:0次
2017-02-17更新
|
3582次组卷
|
5卷引用:四川省内江市威远中学校2021-2022学年高一下学期第二次阶段性测试数学(理)试题