名校
解题方法
1 . 如图,在正三棱柱
中,
,点
在
上,且
,
为
中点,证明:
(1)
平面
;
(2)平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1baa3d0db9ad31d33c2883a6efed1dc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86cd21f01a0ff0a12dcd8c3e40ff5f3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/26/61161d54-a52f-445f-9839-39ddb3cb1b8e.png?resizew=159)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dde9b576a6b6e6d56e92f75e9c01a4f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07a33bc93519e73c348079a3fdf90af.png)
(2)平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84a7daa3e613b36ed510a93bce3be664.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07a33bc93519e73c348079a3fdf90af.png)
您最近一年使用:0次
2 . 已知抛物线
的焦点为
,
为抛物线上一点,
,且
的面积为
,其中
为坐标原点.
(1)求抛物线
的方程;
(2)已知点
,不垂直于
轴的直线
与抛物线
交于
,
两点,若直线
,
关于
轴对称,求证:直线
过定点并写出定点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6595367508aef224945bb140eae7bbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0942fc5e4da4ae86721efc5bb7e2cfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23728b4c0467a27d90f71b424f6a946.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2023-02-19更新
|
450次组卷
|
5卷引用:吉林省白城市通榆县2022-2023学年高二上学期期末数学试题
名校
解题方法
3 . 已知a,b,c分别为△ABC内角A,B,C的对边,且
.
(1)证明:
;
(2)若△ABC的面积S=2,
,求角C.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a071b3271a35bf3eae29c9c774820333.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c45c4afdb30512752c377037e4c71e9.png)
(2)若△ABC的面积S=2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5af039cad52ca4e1f1e322277bc81afd.png)
您最近一年使用:0次
名校
4 . 如图,在四棱台
中,底面
是边长为2的菱形,
,平面
平面
,点
分别为
的中点,
均为锐角.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/728a0186-2b6c-4c2e-9b54-f74aa2b56c10.png?resizew=225)
(1)求证:
;
(2)若异面直线
与
所成角正弦值为
,四棱锥
的体积为1,求二面角
的平面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd7a42341edbc0b01ab0769c4c02c3e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9578aee1ffa7a74c04debf1679b068d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cef469b1ee29d124cfd6f62423724cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee6b28373d1cf44efd0301e8cbf16080.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a046c94d66691601bd10ce823fd26629.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/728a0186-2b6c-4c2e-9b54-f74aa2b56c10.png?resizew=225)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1de5964353beb55c5058b2a431eecaf.png)
(2)若异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3aace91caec728e174daec29a3568ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e2e341788ce1be913bc47b3831c6baa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1654dfe63f11563eadbaee32dae7b1e.png)
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2022-11-24更新
|
3187次组卷
|
11卷引用:吉林省长春市第二实验中学2022-2023学年高三上学期期末数学试题
吉林省长春市第二实验中学2022-2023学年高三上学期期末数学试题浙江省稽阳联谊学校2022-2023学年高三上学期11月联考数学试题 重庆市2023届高三上学期期中数学试题(已下线)专题08 立体几何解答题常考全归类(精讲精练)-2(已下线)专题3 解答题题型广东省揭阳市普宁国贤学校2023届高三下学期3月连考3数学试题四川省成都市锦江区嘉祥外国语高级中学2022-2023学年高一下学期期末考试数学试题浙江省金华市东阳市外国语学校、东阳中学2022-2023学年高一下学期5月联考数学试题(已下线) 第1章 空间向量与立体几何单元测试能力卷-2023-2024学年高二数学上学期人教A版(2019)选择性必修第一册(已下线)专题15 立体几何解答题全归类(练习)(已下线)上海市奉贤区2024届高三一模数学试题变式题16-21
名校
解题方法
5 . 如图,四棱锥
中,
,
,
,
,
,
为线段
中点,线段
与平面
交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/27/f5fb60cd-f205-47d6-b4ca-6b8ded0f0c2e.png?resizew=197)
(1)证明:平面
平面
;
(2)求平面
与平面
夹角的余弦值;
(3)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e1bfda3eb47e76080a877533deb072b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4cd8ba7eb52e38857830162e770f534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3653ada76ba0c8afe9d57c8e7832c6ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/27/f5fb60cd-f205-47d6-b4ca-6b8ded0f0c2e.png?resizew=197)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3653ada76ba0c8afe9d57c8e7832c6ed.png)
(3)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c5db0d86500773db74278f092f3d78.png)
您最近一年使用:0次
2023-08-25更新
|
1105次组卷
|
3卷引用:吉林省长春市长春净月高新技术产业开发区东北师范大学附属中学2022-2023学年高二上学期期中数学试题
吉林省长春市长春净月高新技术产业开发区东北师范大学附属中学2022-2023学年高二上学期期中数学试题(已下线)专题03 空间向量求角度与距离10种题型归类-【巅峰课堂】2023-2024学年高二数学上学期期中期末复习讲练测(人教A版2019选择性必修第一册)(已下线)难关必刷01 空间向量的综合应用-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(人教A版2019选择性必修第一册)
名校
6 . 已知函数
.
(1)求函数
单调区间;
(2)设函数
,若
是函数
的两个零点,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455e11da99e74eed8b777828d10b31ca.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83ef9f9f0a79e61a30f7da782cbb2fab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707443cbaedaf168568ca9e5f9b9951b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b725fdc8de9800f2692f6fea8585b1e9.png)
您最近一年使用:0次
7 . 如图,四棱锥
的底面ABCD是边长为2的正方形,平面
平面ABCD,
是斜边PA的长为
的等腰直角三角形,E,F分别是棱PA,PC的中点,M是棱BC上一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/30/89f91959-8a4f-4168-aacd-4578160076f7.png?resizew=172)
(1)求证:平面
平面PBC;
(2)若直线MF与平面ABCD所成角的正切值为
,求锐二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/30/89f91959-8a4f-4168-aacd-4578160076f7.png?resizew=172)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f165b7e8c4d8d5e028b8ffd8f0d26a49.png)
(2)若直线MF与平面ABCD所成角的正切值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dedfba8b9447a4db53baae62fdeebfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edbb52befa94a9f54e6f3e3125918016.png)
您最近一年使用:0次
2023-01-14更新
|
344次组卷
|
2卷引用:吉林省长春市长春外国语学校2022-2023学年高三上学期期末数学试题
名校
解题方法
8 . 已知等差数列
满足
,
,
的前n项和为
.
(1)求
及
的通项公式;
(2)记
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0939caf47d751f8c7139bd0b25fe98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f5775fff251847305756b90e62429f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1339f4e85f82a007362def9c8a31237.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/762022cd7c3133845e5f6c5cbb6c536c.png)
您最近一年使用:0次
2023-01-14更新
|
501次组卷
|
3卷引用:吉林省长春市长春外国语学校2022-2023学年高三上学期期末数学试题
解题方法
9 . 已知函数
,满足
.
(1)求实数
的值;
(2)试判断此函数
在
上的单调性并利用定义给予证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96ff6d3f9f2822df2e2afdd90a0e5867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef2635c6e599f816c706e471a3c197d5.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)试判断此函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
您最近一年使用:0次
10 . 如图,四棱锥P-ABCD中,底面ABCD为矩形,PA⊥平面ABCD,
,
,
,
,设平面DAE与平面AEC的夹角为θ.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/ac2c1be7-d890-46ce-936a-ec503db07adb.png?resizew=194)
(1)当
时.求证:
平面ACE;
(2)若
时,求PC与平面ACE所成角的正弦值;
(3)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d7d21e3f1f0ce82530c861b28f55faf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/067567dc88fbb63cacabaaf2526c3f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a35f854252711eda0da03aa03d167403.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96c79c9cd9151d417db36697f538713.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/ac2c1be7-d890-46ce-936a-ec503db07adb.png?resizew=194)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/253c1036cfa4a9f4058906069e03faee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa69a2247ad4d5231aa361349b12f97.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/253c1036cfa4a9f4058906069e03faee.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c41bb1e36a0f38440d3cf95158a5bef3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13c62e7c58606b2250c6d189d85a6ea8.png)
您最近一年使用:0次