1 . 如图,在四棱锥
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f022f201dbd14f38b45ca33d30c631e.png)
,底面
为正方形.记直线
与平面
所成的角为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/76465f92-3e86-4c66-8b74-52982ee84605.png?resizew=196)
(1)求证:平面
平面
;
(2)若二面角
的大小为
,求
的值;
(3)当
时,
、
中点为
,
,点
为线段
上的动点(包括端点),
,二面角
的大小记为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f022f201dbd14f38b45ca33d30c631e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea574e021151141d6a56e5fb8f70ca3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/76465f92-3e86-4c66-8b74-52982ee84605.png?resizew=196)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78307cd417504554a4e2276fe24d1162.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5000fea066102e62cf2128ccbbd2b3e3.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56fbfbab5bd0989259b00490ee118947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0211da37e92f915e781691296578ba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefd06c239145a2b6ae87a955aa51414.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70ad7d1e3fad77908415415d6b2a90f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4db9b82b67efe45a02fca32bfcf5dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3af2fa3f00743e79487e96b81b9e1290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24146db7088bd19886b14ad0d4c1d32b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
您最近一年使用:0次
2022-07-20更新
|
1300次组卷
|
2卷引用:辽宁省大连市2021-2022学年高一下学期期末数学试题
名校
2 . 已知梯形
中,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/5/18/2981893460721664/2982340511793152/STEM/21ab9aed-515d-41ae-9b6c-064c45308291.png?resizew=175)
(1)求
的最大值,此时
等于多少?
(2)求梯形
面积的最大值,此时
等于多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc6b94f23607ff4261c371ec9425c8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3a0edf53b56ee015f9a7b1a083da275.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0ed15020c1c669e06a3a3b1557242e9.png)
![](https://img.xkw.com/dksih/QBM/2022/5/18/2981893460721664/2982340511793152/STEM/21ab9aed-515d-41ae-9b6c-064c45308291.png?resizew=175)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6151fb896230f2579d516af4c67e634a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)求梯形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
您最近一年使用:0次
名校
3 . 如图所示,
是棱长为a的正方体,M是棱
的中点,N是棱
的中点.
(2)求异面直线AN与BM所成角的大小.(计算结果用反三角函数表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
(2)求异面直线AN与BM所成角的大小.(计算结果用反三角函数表示)
您最近一年使用:0次
2021-11-19更新
|
168次组卷
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3卷引用:高二数学上学期【第一次月考卷】(测试范围:第10~11章)-2022-2023学年高二数学考试满分全攻略(沪教版2020必修第一册)
(已下线)高二数学上学期【第一次月考卷】(测试范围:第10~11章)-2022-2023学年高二数学考试满分全攻略(沪教版2020必修第一册)上海市浦东新区南汇中学2021-2022学年高二上学期10月月考数学试题上海市金山区张堰中学2023-2024学年高二上学期阶段教学质量调研数学试题
4 . 设函数
,其中
、
、
、
为已知实常数,
,有下列四个命题:(1)若
,则
对任意实数
恒成立;(2)若
,则函数
为奇函数;(3)若
,则函数
为偶函数;(4)当
时,若
,则
(
);则上述命题中,正确的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80a1d7b38cbf754e4c264cb862c367b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76986fdb5852346be8e4b3be846269fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3047d4ab078dafc06c047bcbf0a6ffaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/104375baf5cef5eb92cfc7cf13b80193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/019b19c64b49e010aa2d544348c6404d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ba6590f3b8a63c086872ea1d8edb8bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c2a6c35384d6ebc5e47ffecb16c1d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b019d78cb296be8a2cbd64fb96b8655.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99074f989e74d5ff306b4b7b7a379c1f.png)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
2020-07-24更新
|
908次组卷
|
5卷引用:上海市曹杨第二中学2021-2022学年高一下学期3月月考数学试题
上海市曹杨第二中学2021-2022学年高一下学期3月月考数学试题上海市青浦高级中学2019-2020学年高一下学期期末数学试题(已下线)专题02 三角函数 三角恒等变换(难点)-2020-2021学年高一数学下学期期末专项复习(北师大版2019必修第二册)(已下线)上海期末真题精选50题(小题压轴版)-2020-2021学年高一数学下册期中期末考试高分直通车(沪教版2020必修第二册)(已下线)第7章 三角函数(章节压轴题专练)-2020-2021学年高一数学下册期中期末考试高分直通车(沪教版2020必修第二册)
名校
5 . 在直角坐标系
中,对于点
,定义变换
:将点
变换为点
,使得
其中
.这样变换
就将坐标系
内的曲线变换为坐标系
内的曲线.则四个函数
,
,
,
在坐标系
内的图象,变换为坐标系
内的四条曲线(如图)依次是
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/de629ed5-5796-4f96-a49d-1b631a174e8f.png?resizew=151)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c0ad7e7853a069537387b5192f73844.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277e0be448b4955903e81e8795e45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0a293dbfb1cda8fa7a7f9e1b84ec1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9e6029a17d5f1e65d26f405baa18ff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c0ad7e7853a069537387b5192f73844.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb6f70c26a40ac89ae3095b03dd2ba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e944e42c4589b806f3ee9a453ccb935f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f7904a8932a74da7b2d2908432d9cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f59eb902f760d7d0d9bb6d055ed45072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dfed8533bad862509e38df5f6f79893.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb6f70c26a40ac89ae3095b03dd2ba0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/de629ed5-5796-4f96-a49d-1b631a174e8f.png?resizew=151)
A.②,③,①,④ | B.③,②,④,① | C.②,③,④,① | D.③,②,①,④ |
您最近一年使用:0次
2019-05-09更新
|
427次组卷
|
8卷引用:北京市育才学校2022届高三下学期仿真测试数学试题
名校
6 . 符合以下性质的函数称为“
函数”:①定义域为
,②
是奇函数,③
(常数
),④
在
上单调递增,⑤对任意一个小于
的正数
,至少存在一个自变量
,使
.下列四个函数中
,
,
,
中“
函数”的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfefc60781e5de45c01c658c501188cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1fce155963060b2e5b9147a185897cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33cf9d227c48423d8efe47b9a1ee9ed2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95b0ee65375e05a48ac88edb4de670e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94bb8cb665511e2bb84b25836579dcf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c55044423078ea9b8821182dc9037ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aaab7082a1fbd11646f4508c3f15c74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-02-04更新
|
360次组卷
|
3卷引用:课时21 反三角函数和最简三角方程-2022年高考数学一轮复习小题多维练(上海专用)