名校
1 . 已知函数
.
(1)求证:函数
是定义域为
的奇函数;
(2)判断函数
的单调性,并用单调性的定义证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbd9e52b79fb84c320dc522e13d4f0b.png)
(1)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
2024-01-24更新
|
656次组卷
|
4卷引用:海南省白沙县海南中学白沙学校2023-2024学年高一上学期期末数学试题
名校
解题方法
2 . 如图,在四棱锥
中,底面
是正方形,
.
(1)求证:
;
(2)若
,设点
为线段
上任意一点(不包含端点),证明,直线
与平面
相交.
![](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/b44f4120c94cb7176dc31fcac387b32e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/28/fbf42177-3a59-4f77-95fe-9a232bba8df0.png?resizew=155)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545e18836bc7fee22f8f813a6f525d93.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c55aa2447493e51333f865c09e6a432.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b35708245a5da381178284f5ac7ce9c6.png)
您最近一年使用:0次
名校
3 . 已知
.
(1)若
在
处取到极值,求
的值;
(2)直接写出
零点的个数,结论不要求证明;
(3)当
时,设函数
,证明:函数
存在唯一的极小值点且极小值大于
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f77abf65029bf4014dfea70aded594.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f5be3af0c67a20bee47063487d305f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
您最近一年使用:0次
4 . 已知直三棱柱
,各棱长均为
,
为
的中点,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/15/e943d3ee-c5ea-4a3b-b6ba-ab0d4712be39.png?resizew=146)
(1)求证:
平面
;
(2)求异面直线
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/15/e943d3ee-c5ea-4a3b-b6ba-ab0d4712be39.png?resizew=146)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42605242ae45b6223b23b7a70a2b1618.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5888bec948373f3854258ad80171073d.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
您最近一年使用:0次
5 . 在数列
和
中,
,且
是
和
的等差中项.
(1)设
,求证:数列
为等比数列;
(2)若
的前n项和为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b2cc1095ffa20e537b02de51e2bc45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36dfab3d1da98786344a73a58bfb6b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331f96a1ebc7b11e8177c50c70c094a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62bae11b31f657478e97646895a289e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f379a3b2ecaa07bad3bbcd809d6b96.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25b67af73f586837594ab0db4b89baed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ef7532d3061c9386aa9b2a4af65f2a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e4f523bbf471c9811c1101cc76125a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f465a44170e765ed018eeca0d3054dc.png)
您最近一年使用:0次
解题方法
6 . 三棱台
中,若
面
,
,
,
,
,
分别是
的中点.
(1)求证:
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90e17995e2f71e297d94ae51c7e5b1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9260ee90b4107dcdc5b2b0937c40e8c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3676391efa2ac62958c633b7943e746.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/20ddad7a-9ed7-4235-94cd-0ae962869862.png?resizew=153)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef2e72bc4f73790da7c76e46767b4fd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f96c673a2381f118ea2d3efc0bca1f3.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a3f5c4436466bed86c25c5f26ccbeb.png)
您最近一年使用:0次
解题方法
7 . 如图,在直三棱柱
中,M,N分别为棱
,
的中点,
,
,
,
.
(1)求证:
平面
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/822ba132ca9dd0d4a050659aef3c9b26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d0fdc5a00ca0e857b89a7e1420df29.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/d5e31be5-1a1b-434d-a6a4-678c0275e54e.png?resizew=123)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34cf61780928291d51c7bbb08a5fcf81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae80f09dae8acbe1e5e27bd5c4d8164.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/953398d039a43d5d4bd0eb7c52ffb7ff.png)
您最近一年使用:0次
2023-11-13更新
|
426次组卷
|
2卷引用:海南省部分学校2024届高三上学期学业水平诊断(一)数学试题
名校
8 . 四棱锥
中,四边形ABCD为菱形,
,平面
平面ABCD.
;
(2)若
,且PA与平面ABCD成角为
,点E在棱PC上,且
,求平面EBD与平面BCD的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f30956efda3c185151b3dbdbc57166a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04c222223dae9ef27d4c132534d9848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccbd1316b9d1f0c1e71fd078deec61f6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d0710321d97361e5782124bbf7f0c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/937265e26003340ade57b86a4ca0f78d.png)
您最近一年使用:0次
2024-04-02更新
|
1415次组卷
|
8卷引用:海南省琼海市嘉积中学2022-2023学年高二上学期期末数学试题
海南省琼海市嘉积中学2022-2023学年高二上学期期末数学试题云南省开远市第一中学校2023-2024学年高二上学期10月月考数学试题(已下线)第02讲:空间向量与立体几何交汇(必刷6大考题+7大题型)-2023-2024学年高二数学上学期《考点·题型·难点》期末高效复习(人教A版2019选择性必修第一册)海南省文昌中学2023-2024学年高二下学期第一次月考数学试题河南省周口市川汇区周口恒大中学2023-2024学年高二上学期期末数学试题江苏省南通市新高考2024届高三适应性测试数学模拟试题黑龙江省大庆市实验中学实验二部2023-2024学年高三下学期得分训练数学试卷(一)湖南省邵阳市第二中学2023-2024学年高二下学期4月期中考试数学试题
名校
解题方法
9 . 已知函数
,且
在
处取得极值.
(1)求a;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ce6bdb1a8271f7f1a640f91a32a4df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(1)求a;
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99ac88fba12e6a16206a3e9edf6b7abe.png)
您最近一年使用:0次
2023-09-21更新
|
277次组卷
|
2卷引用:海南省琼中黎族苗族自治县琼中中学2024届高三上学期9月高考全真模拟卷(一)数学试题
解题方法
10 . 已知圆
,圆
,证明圆
与圆
相交,并求圆
与圆
的公共弦长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0d9aa06aae653c5d9206ceefd7df7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9444c86466e14ecbaf69c7647b7d4835.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
您最近一年使用:0次