名校
1 . 如图,在四棱锥P﹣ABCD中,底面ABCD为梯形,DC=3AB=3,AD=3,AB∥CD,CD⊥AD,平面PCD⊥平面ABCD,E为棱PC上的点,且EC=2PE.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/bdc1f794-f2ca-4980-a8ec-36d943d66a97.png?resizew=184)
(1)求证:BE∥平面PAD;
(2)若PD=2,二面角P﹣AD﹣C为60°,求平面APB与平面PBC的夹角的余弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/bdc1f794-f2ca-4980-a8ec-36d943d66a97.png?resizew=184)
(1)求证:BE∥平面PAD;
(2)若PD=2,二面角P﹣AD﹣C为60°,求平面APB与平面PBC的夹角的余弦值.
您最近一年使用:0次
2024-01-15更新
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649次组卷
|
2卷引用:西藏拉萨市部分学校2023-2024学年高二上学期期末模拟数学试题(理科)
解题方法
2 . 如图,在四棱锥
中,
,四边形
为菱形,
,
平面
分别是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/ec0b994a-d939-4012-ae82-e07ef3f5bc46.png?resizew=201)
(1)证明:平面
平面
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83a04565a8ebaa111894b724b0ba266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff5a86745bfe1dfe7bc2683811210330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/372ac2824553ed0f731093005724e77c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07734d81e60163b9698f7bd820ad232.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/ec0b994a-d939-4012-ae82-e07ef3f5bc46.png?resizew=201)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78eb0e7bd1ab94d6b3a03756bcbb0e12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e34194945be714f87c9bc02c808b55.png)
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解题方法
3 . 已知实数
满足约束条件
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f9bb4ee09ac076b5f5789a59967e29b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7620b0278bcb316da6e5dafaa18ea268.png)
A.![]() | B.0 | C.1 | D.2 |
您最近一年使用:0次
解题方法
4 . 已知函数
.
(1)若
,求不等式
的解集;
(2)若
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39d70f223c629dc86d00694b00c2f058.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7a504db9edcdb6add26ecc72e18359a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f0c12b080d33793aebdf417a0cb498b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
解题方法
5 . 已知函数
.
(1)若
的定义域为
,求实数a的取值范围;
(2)若
在
上单调递增,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a6a5e6cb2adc544b8a0c0b32727efa6.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/940acd97c9f6cdc3b3f9b12babd8032b.png)
您最近一年使用:0次
2024-01-10更新
|
279次组卷
|
6卷引用:西藏山南市2023-2024学年高一上学期期末考试数学试题
6 . 在平面直角坐标系中,曲线
,曲线
的参数方程为
(
为参数),以坐标原点
为极点,
轴的正半轴为极轴建立极坐标系.
(1)求曲线
的极坐标方程;
(2)在极坐标系中,射线
与曲线
分别交于
两点(异于极点
),求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca83a3c2edc7a1d19930fc2dea18b45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc9e0d9cb6cb1dd922db49a434e350f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e9feabc99f62ee569b460e61526e2e.png)
(2)在极坐标系中,射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac93b0b1bc6136c9a64c1fce87a4665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e9feabc99f62ee569b460e61526e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
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2024-01-09更新
|
368次组卷
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4卷引用:西藏林芝市2024届高三一模数学(理)试题
西藏林芝市2024届高三一模数学(理)试题四川省成都市天府新区综合高级中学2024届高三上学期一月考试数学(理)试题四川省成都市天府新区综合高级中学2024届高三上学期一月考试数学(文)试题(已下线)2024年高考数学二轮复习测试卷(全国卷文科专用)
名校
解题方法
7 . 已知双曲线
的左、右焦点分别为
为坐标原点,
为双曲线上在第一象限内的一点,
,且
的面积为
,则双曲线的离心率
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447120a38d5e15d7a01d36231d648d7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7947169765e59205907c644595fc11a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ead07dd0f086a947e160a785c7cd3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c94a5b6322be0f3ca6f7dfa8b908890.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ce2b47812fce4b17fd813d0e4cce21.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-01-09更新
|
224次组卷
|
2卷引用:西藏林芝市2024届高三一模数学(理)试题
名校
8 . 设
,过定点A的动直线
和过定点B的动直线
交于点
,则
的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aca3272c91ba9773f1c8342cdfdc432.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63aa660686c9d384e3853b367962b4ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/559d66fd8b309fd440ce9bda78a579c9.png)
A.5 | B.10 | C.![]() | D.![]() |
您最近一年使用:0次
2024-01-09更新
|
451次组卷
|
6卷引用:西藏林芝市2023-2024学年高二上学期期末学业水平监测数学试题
解题方法
9 . 已知等比数列
的公比
,且
.
(1)求
的通项公式;
(2)若
为等差数列,且
,
,求
的前
项利
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d9b6c86435e0ceff94d8ad1cd03737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdefe767533b3368858d21233e65bf59.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55465a4e2f66f59176600a89b283b67d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc4158d79faf101bd42dacd31d4a5eb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
解题方法
10 . 已知函数
,函数
的图象与
轴的交点关于
轴对称,当
时,函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
______ ;当函数
有三个零点时,函数
的极大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3524407391297541273868f3e3c1b74e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次