名校
解题方法
1 . 某公司一下属企业从事某种高科技产品的生产.该企业第一年年初有资金2000万元,将其投入生产,到当年年底资金增长了50%.预计以后每年年增长率与第一年的相同,公司要求企业从第一年开始,每年年底上缴资金
万元,并将剩余资金全部投入下一年生产.设第
年年底企业上缴资金后的剩余资金为
万元.
(1)用
表示
与
,并写出
与
的关系式;
(2)求证:当
时,数列
为等比数列,并说明
的现实意义;
(3)若公司希望经过
年使企业的剩余资金为4000万元,试确定企业每年上缴资金
的值.(用
表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090426eb29836bc30c006b3739c08057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/264c6a21014af96f07057f811e18715a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74a9d12cae77e4674c8ad137adcccb1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d55dbf1d85d5a0e3d9b68ffaa0aee74.png)
(3)若公司希望经过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32242e0f13757d9272dbb9b2dde59396.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2021-09-01更新
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354次组卷
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3卷引用:重庆市育才中学2021-2022学年高二上学期第五次定时练习数学试题
名校
解题方法
2 . 如图1,在等腰梯形
中,
分别是
的两个三等分点.若把等腰梯形沿虚线
折起,使得点
和点
重合,记为点
,如图2.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/f186e8f6-4865-4642-8eae-589bf91a2d38.png?resizew=350)
(1)求证:平面
平面
;
(2)求平面
与平面
所成锐二面角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02019fa90826c178bc1cd1a29ddc76f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fb907cb90c735c33c6b886bf86923e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/f186e8f6-4865-4642-8eae-589bf91a2d38.png?resizew=350)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f020ca4ad44801691235958e253907d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec1dcba40b263c1119ea0a36651c7812.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64eb31601464364be2baf4aa87404bcd.png)
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名校
3 . 如图,已知正方形
的边长为
,
,
分别为
,
的中点,沿
将四边形
折起,使二面角
的大小为
,点
在线段
上.
![](https://img.xkw.com/dksih/QBM/2021/10/7/2824012023349248/2825577112723456/STEM/0c43cda5-4936-43e7-a198-6fd6036881d0.png?resizew=475)
(1)若
为
的中点,且直线
与直线
的交点为
,求
的长,并证明直线
平面
;
(2)是否存在点
,使得直线
与平面
所成的角为
,若存在,求此时二面角
的余弦值,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41c2d7ae6aaf6d91129ed5221a415a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a34e44c5d7e1d22521fb293994f5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2021/10/7/2824012023349248/2825577112723456/STEM/0c43cda5-4936-43e7-a198-6fd6036881d0.png?resizew=475)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1642eec556eb252de9c1ab7bb5ca90b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6072ec6dfc0203cabb1fe289a5ddc8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/558ce69401f3c97930f00ba0e2aa6647.png)
(2)是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/558ce69401f3c97930f00ba0e2aa6647.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f32f4194980263248efbcbee46046e3.png)
您最近一年使用:0次
名校
4 . (1)求证:
;
(2)已知
,求
的根的个数;
(3)求证:若
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22bf4f41cf8859c51efa2778ea714fc.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87467293f890d595d36e67ab829ca482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/502c4ff1cd420b9da4de849e63c307e9.png)
(3)求证:若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd51a49264c990240a3abba25584e4a8.png)
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2021-04-24更新
|
907次组卷
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7卷引用:重庆市杨家坪中学2020-2021学年高二下学期6月月考数学试题
重庆市杨家坪中学2020-2021学年高二下学期6月月考数学试题(已下线)第五章 一元函数的导数及其应用单元测试(巅峰版)-【新教材优创】突破满分数学之2020-2021学年高二数学课时训练(人教A版2019选择性必修第二册)辽宁省“决胜新高考·名校交流“2021届高三3月联考数学试题八省名校2021届高三新高考冲刺大联考数学试题(已下线)专题2.16 导数-不等式的证明-2021年高考数学解答题挑战满分专项训练(新高考地区专用)(已下线)第四章 导数专练11—构造函数证明不等式(1)-2022届高三数学一轮复习新疆维吾尔自治区乌鲁木齐市第101中学2024届高三上学期8月月考数学(理)试题
名校
5 . 如图,在四棱锥S﹣ABCD中,ABCD为直角梯形,AD∥BC,BC⊥CD,平面SCD⊥平面ABCD.△SCD是以CD为斜边的等腰直角三角形,BC=2AD=2CD=4,E为BS上一点,且BE=2ES.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/a066a7d2-437d-4795-95d0-fbbc83b0fdb2.png?resizew=162)
(1)证明:直线SD∥平面ACE;
(2)求二面角S﹣AC﹣E的余弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/a066a7d2-437d-4795-95d0-fbbc83b0fdb2.png?resizew=162)
(1)证明:直线SD∥平面ACE;
(2)求二面角S﹣AC﹣E的余弦值.
您最近一年使用:0次
2021-04-02更新
|
1952次组卷
|
19卷引用:重庆市育才中学2021-2022学年高二上学期期中数学试题
重庆市育才中学2021-2022学年高二上学期期中数学试题(已下线)【新东方】高中数学20210527-001【2021】【高二下】(已下线)全册综合测试模拟二 -【新教材精创】2020-2021学年高二数学新教材知识讲学(人教A版选择性必修第一册)湖南省常德市第二中学2020-2021学年高二(332班)下学期期中数学试题重庆市璧山来凤中学校2022-2023学年高二上学期期中数学试题山东省烟台市2019-2020学年高三上学期期末考试数学试题(已下线)2020年秋季高三数学开学摸底考试卷(新高考)01(已下线)考点23 运用空间向量解决立体几何问题-2021年高考数学三年真题与两年模拟考点分类解读(新高考地区专用)江苏省南京市2020-2021学年高三上学期期中考前训练数学试题(已下线)专题15 运用空间向量研究立体几何问题-2021年高考数学二轮优化提升专题训练(新高考地区专用)【学科网名师堂】(已下线)黄金卷07 【赢在高考·黄金20卷】备战2021年高考数学全真模拟卷(广东专用)(已下线)技巧03 解答题解法与技巧 第二篇 解题技巧篇(练)-2021年高考数学二轮复习讲练测(浙江专用)(已下线)专题5.3 运用空间向量解决立体几何中的角与距离-备战2021年高考数学精选考点专项突破题集(新高考地区)黑龙江省哈尔滨第六中学2021届高三三模数学(理)试题(已下线)预测11 空间向量与立体几何-【临门一脚】2021年高考数学三轮冲刺过关(新高考专用)【学科网名师堂】江苏省南通市重点中学2021-2022学年高三上学期9月强基测试数学试题福建省福州第二中学2021届高三上学期第一次月考数学试题(已下线)第52讲 空间向量在立体几何中的运用陕西省汉中市西乡县第一中学2023届高三下学期第六次考试理科数学试题
6 . 如图所示,正方形
所在的平面与等腰
所在的平面互相垂直,其中
,
为线段
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/9/742e42e4-9834-4f79-b9e0-e67617c83900.png?resizew=209)
(1)若
是线段
上的中点,求证:
平面
;
(2)
是线段
上的点,若
,设直线
与平面
所成角的大小为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f10874721f904634ee405008610e13d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6222cf3b6a43dd5a708164b39b755d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/9/742e42e4-9834-4f79-b9e0-e67617c83900.png?resizew=209)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f7dd424c1184e0656dcdad0e8b6d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d6d8ea948f80350a06eb8b7a0bdb29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac73bb000121f2548c43fd72f57e510.png)
您最近一年使用:0次
名校
7 . 如图,四棱锥
的底面
是矩形,侧面
是正三角形,
,
,
分别为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/c804b2fa-800c-4c4f-997f-ae5c8b242dd5.png?resizew=307)
(1)求证:
;
(2)求平面
与平面
所成角的锐二面角的余弦值.
![](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/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b38154f661a1c7e0b1e7d03dda8f97d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ced8225ff27c8e3e1897b8629312d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1da2078b8e4cb44d7147917152d601e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21d6efca23a04c9c25e8d6c8ccd78e73.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/c804b2fa-800c-4c4f-997f-ae5c8b242dd5.png?resizew=307)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/141ee0cedfea5ae83aaac1106e2cc259.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42c12f863669a9c6233fdead272b4d7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1df4b17b68b857bc4a5c34dfd3881a7.png)
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2021-01-12更新
|
216次组卷
|
2卷引用:重庆市育才中学校2020-2021学年高二上学期期中数学试题
名校
解题方法
8 . 如图,已知四棱锥
的底面为直角梯形,且满足
,
,平面
平面
.
为线段
的中点,
为线段上的动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/883e0e91-385e-4811-9811-d4da07991c7e.png?resizew=170)
(1)求证:平面
平面
;
(2)设
,当二面角
的大小为60°时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81c7c3fb46f6c07e5aefabaf9c5fa5b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235d1553f6806c1eee3b17b94d23f0f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21665d21bbfb04410c78345de1fd15ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/883e0e91-385e-4811-9811-d4da07991c7e.png?resizew=170)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235d1553f6806c1eee3b17b94d23f0f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97245dc4a30ac7e03f6b55d5b2f4401b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/496eefb185e0ed09af5655772958ae9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2020-12-18更新
|
1529次组卷
|
7卷引用:重庆市育才中学校2020-2021学年高二下学期第一次月考数学试题
重庆市育才中学校2020-2021学年高二下学期第一次月考数学试题湖北省荆州市2020-2021学年高三上学期质量检查(一)数学试题(已下线)2021届高三高考数学适应性测试八省联考考后仿真系列卷九江苏省连云港市2020-2021学年高三上学期1月适应性演练模拟考试数学试题江苏省南京五中2021届高三下学期一模热身测试数学试题(已下线)专题04 二面角(含探索性问题)-【解题思路培养】2022年高考数学一轮复习解答题拿分秘籍(全国通用版)山东省济南·德州七校联考2021-2022学年高三上学期12月检测数学试题
名校
解题方法
9 . 如图在三棱柱
中,底面
是边长为2的等边三角形,D为AC中点.
![](https://img.xkw.com/dksih/QBM/2020/12/7/2609021568974848/2615217421901824/STEM/efa7c388e06147398464a285796d5e2f.png?resizew=195)
(1)求证:
平面
;
(2)若四边形
是正方形,且
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/2020/12/7/2609021568974848/2615217421901824/STEM/efa7c388e06147398464a285796d5e2f.png?resizew=195)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c920d02068d0e63ffdab70786c526d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a935b7d21a103a264b6e96ecf82dbe4a.png)
(2)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee8b5a6dbcf05f572f83f51abf7d668c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b87fa2a14aae7935f19a28bae55ebd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a935b7d21a103a264b6e96ecf82dbe4a.png)
您最近一年使用:0次
2020-12-16更新
|
490次组卷
|
5卷引用:重庆市铁路中学校2020-2021学年高二上学期12月月考数学试题
名校
解题方法
10 . 如图,四棱锥
中,底面
是梯形,
,
,
,
,
,
为边
的中点.
![](https://img.xkw.com/dksih/QBM/2020/11/25/2600460559138816/2604869022048256/STEM/9929fedb-f864-4498-8b1c-4453c81ffdfd.png?resizew=256)
(1)求证:
平面
;
(2)求三棱锥
的体积.
![](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/925fc6d18820c1acb6bb6b850eaa1f14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5dd27816b832348ecf2fd43d4309f17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62974d34de3a12418d6b700420afd1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b6e3e900a2d5c052d719b0d4f823c8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1720da6d65e7fa854d98322d3864240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/2020/11/25/2600460559138816/2604869022048256/STEM/9929fedb-f864-4498-8b1c-4453c81ffdfd.png?resizew=256)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f369bec2d5682bf6b8b317a08aff546.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8db2bec6ebe672e8f83f24e9bdf4654.png)
您最近一年使用:0次
2020-12-01更新
|
1878次组卷
|
4卷引用:重庆市杨家坪中学2020-2021学年高二上学期半期数学试题
重庆市杨家坪中学2020-2021学年高二上学期半期数学试题(已下线)三轮冲刺卷01-【赢在高考·黄金20卷】备战2022年高考数学(文)模拟卷(全国卷专用)江西省赣州厚德外国语学校、丰城中学2023届高三上学期10月联考数学(文)试题(已下线)8.5.2直线与平面平行(分层作业)-【上好课】