名校
1 . 在四棱锥
中,
底面
,
,
,
,
,点
为棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/ecb783ed-2e5f-4691-921f-f5dd7408208b.png?resizew=185)
(1)求证:
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](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/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd8e727e4efc22b49649f71ae9c9d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ba814113887c21637c1954f244812f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/ecb783ed-2e5f-4691-921f-f5dd7408208b.png?resizew=185)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c38bbe49284a2ceab26001ced8cfd56.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ca5b5fd1031438de2d2dd59be8c348.png)
您最近一年使用:0次
2020-04-17更新
|
543次组卷
|
2卷引用:黑龙江大庆实验中学2019-2020学年高一下学期线上期中考试数学试题
名校
2 . 如图所示的几何体中,面
底面
,四边形
为正方形,四边形
为梯形,
,
,
,
为
中点.
![](https://img.xkw.com/dksih/QBM/2020/4/10/2438549176139776/2439095233019904/STEM/23bb81e75d4043df9933ea6007ee26d4.png?resizew=183)
(1)证明:
面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9367449a5847eade07e69f4feddcb027.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4794f2d40733122dbf35a7dd6cf96131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabe9c609ca88802157ea9438980489e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://img.xkw.com/dksih/QBM/2020/4/10/2438549176139776/2439095233019904/STEM/23bb81e75d4043df9933ea6007ee26d4.png?resizew=183)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a48f3a086c6961c5ba7e121a4e60738e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18bd5232087c34be1815adcbb74d03b8.png)
您最近一年使用:0次
2020-04-11更新
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392次组卷
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2卷引用:黑龙江大庆实验中学2019-2020学年高一下学期线上期中考试数学试题
名校
3 . 设函数
对任意
、
都有
,且当
时,
.
(1)证明
为奇函数;
(2)证明
在R上是减函数;
(3)若
,求
在区间
上的最大值和最小值.
![](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/54dad48527a47eab4a5916ab0421cc71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0c6f119137e1b6760d55956d99d963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ee77412e89c659e78054fa6f192b447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e99bebf8db0d314aacb2cb1f09bf48c.png)
您最近一年使用:0次
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解题方法
4 . 如图,四棱锥P﹣ABCD的底面是菱形,AB=AC=2,PA=2
,PB=PD.
![](https://img.xkw.com/dksih/QBM/2020/3/17/2421472456695808/2421731261112320/STEM/db9a1091da2541158f752703a132b309.png?resizew=158)
(1)证明:平面PAC⊥平面ABCD;
(2)若PA⊥AC,M为PC的中点,求三棱锥B﹣CDM的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3f8c3ba00c59e0634ed10fa85289de.png)
![](https://img.xkw.com/dksih/QBM/2020/3/17/2421472456695808/2421731261112320/STEM/db9a1091da2541158f752703a132b309.png?resizew=158)
(1)证明:平面PAC⊥平面ABCD;
(2)若PA⊥AC,M为PC的中点,求三棱锥B﹣CDM的体积.
您最近一年使用:0次
2020-03-17更新
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591次组卷
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4卷引用:黑龙江省大庆市铁人中学2019-2020学年高一(下)期末数学试题
黑龙江省大庆市铁人中学2019-2020学年高一(下)期末数学试题福建省福州第一中学2019-2020学年高一下学期期末考试数学试题2020届福建省莆田市高三(线上)3月教学质检数学(文)试题(已下线)专题04 立体几何-2020年高三数学(文)3-4月模拟试题汇编
名校
5 . 已知函数
.
(1)试判断
的奇偶性,并证明;
(2)求使
的
取值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0665bbaecb5a05e45291be3f91d5cd3.png)
(1)试判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b92b70365c63607daecdc8deb73ecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
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解题方法
6 . 已知函数
,其中
且
.
(1)判断函数
的奇偶性,并给予证明;
(2)当
时,不等式
在区间
内有解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/571775615fed32c17cc08e5a0a13c813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/869ebac55a9baecfd3f8e0b840a7ff92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/131a78d36798b9d880e0edf3c1f16b16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
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7 . 已知函数
是偶函数.
(1)求
的值;
(2)若不等式
对
恒成立,求实数
的取值范围.
(注:如果求解过程中涉及复合函数单调性,可直接用结论,不需证明)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00c4200fa840c9a5c5d0d8e696c19c88.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf5caac886a934aa2385adf7b8b7949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a2fe31f8cc463aeff5f7bafa6dba5e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(注:如果求解过程中涉及复合函数单调性,可直接用结论,不需证明)
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8 . 已知幂函数
为偶函数,且在区间
上单调递减.
(1)求函数
的解析式;
(2)讨论
的奇偶性.
(直接给出结论,不需证明)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9da2171deb8489925589f93edf11cb7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f614b3669d70464ad6d9189f153ccc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9b92db837661bd16bd1b01f88f91f89.png)
您最近一年使用:0次
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解题方法
9 . 设定义域为R的奇函数
(a为实数)
(1)求a的值;
(2)判断
的单调性(不必证明),并求出
的值域;
(3)若对任意的
,不等式
恒成立,求实数k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed27095c52fcce29de424f2f1c6616e.png)
(1)求a的值;
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ecc70df44c7dae5330a2dcdb8a690cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6557815c99f1066834851e049dfc1f2c.png)
您最近一年使用:0次
2020-02-19更新
|
185次组卷
|
6卷引用:黑龙江省大庆市大庆中学2019-2020学年高一上学期期末数学(文)试题
黑龙江省大庆市大庆中学2019-2020学年高一上学期期末数学(文)试题(已下线)【新东方】杭州新东方高中数学试卷389浙江省之江教育评价2020-2021学年高一上学期期中联考数学试题(已下线)【新东方】绍兴qw83(已下线)【新东方】在线数学15(已下线)【新东方】双师83
名校
10 . 如图1,平面四边形
中,
,
为
的中点,将
沿对角线
折起,使
,连接
,得到如图2所示的三棱锥![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://img.xkw.com/dksih/QBM/2020/4/18/2444257095041024/2444380746678272/STEM/943f0bd2d8234359b05fe37cd44b33c5.png?resizew=450)
(1)证明:平面
平面
;
(2)已知直线
与平面
所成的角为
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b6e1f4d5902578d398f2fd3cee72f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f8f01137e92c0f2e63467036ae9cce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aa1162d5481e2441fe5bc0d49a576b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://img.xkw.com/dksih/QBM/2020/4/18/2444257095041024/2444380746678272/STEM/943f0bd2d8234359b05fe37cd44b33c5.png?resizew=450)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d28c625d7ac6878957facc8274d459c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f1854ba6cc92481d7a616bd2788a47e.png)
您最近一年使用:0次
2020-04-18更新
|
1016次组卷
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8卷引用:黑龙江省大庆市铁人中学2020-2021学年高一下学期期末数学试题