解题方法
1 . 已知函数
,
是
的导函数.
(1)求证:当
时,
,
;
(2)设
,证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeaef6e8903e531b1aeba50b413d2dc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc3348374d7852d5836b316e58716b8e.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba8670237d792cb26049c62f943bd012.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c47780c520d8d56b247034e5938c68e7.png)
您最近一年使用:0次
2 . 已知正项数列
满足
且
.
(1)求证:数列
为等比数列,并求数列
的通项公式;
(2)证明:数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cd78271826e0a5f74cc0540c3ed1802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14835bf3f00139ccec0694d0924db795.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213e22890204937a5dded4436369390f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1302abaebc9df026c2a83291063e83b4.png)
您最近一年使用:0次
14-15高三上·贵州遵义·阶段练习
3 . 如图,在直三棱柱
中,
,且
.
(1)求证:平面
⊥平面
;
(2)设
是
的中点,判断并证明在线段
上是否存在点
,使
‖平面
;若存在,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f47d6a88e962cd790d2f159c021ec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aba147ef7f44248b5002cebebc6644e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9007977155e06426eb6983775e0839af.png)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea848cd2aa3a464618020475097949fc.png)
![](https://img.xkw.com/dksih/QBM/2014/8/6/1571835590991872/1571835596881920/STEM/c93d1b395e744070af56f2a489e9df65.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea848cd2aa3a464618020475097949fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2093e4e0580dd53e3d25769d05ab9f9c.png)
![](https://img.xkw.com/dksih/QBM/2014/8/6/1571835590991872/1571835596881920/STEM/881f511785094ef5aecbc3894e8afaa3.png)
您最近一年使用:0次
4 . 已知抛物线
上一点
到其焦点
的距离为4;椭圆
的离心率
,且过抛物线的焦点
.
(1)求抛物线
和椭圆
的标准方程;
(2)过点
的直线
交抛物线
于
、
两不同点,交
轴于点
,已知
,求证:
为定值.
(3)直线
交椭圆
于
,
两不同点,
,
在
轴的射影分别为
,
,
,若点S满足:
,证明:点S在椭圆
上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c156c3b344e637b4f86404f2711940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1865434c4e8d9e7527749799df458d5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8e86bf2664d177e9d653309b59528ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075ba8c6fb5ef7288cd3fed425c8e69e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41c4e497938932bfa97e3864ebc5b4f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc9f0f081e55f02136f97614f94b36f.png)
(3)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba11046dd541a320b07452b8926c8343.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81942079d7d8b66687f3d179b245e212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84301218365de7fd1456797081edee55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/363dba524be4b77da2b184c528bb3dc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
您最近一年使用:0次
2016-12-03更新
|
1201次组卷
|
4卷引用:2017届贵州铜仁一中高三上学期入学模拟考试数学(理)试卷
14-15高三上·贵州遵义·阶段练习
5 . 已知函数
.
(1)若曲线
在
处的切线为
,求
的值;
(2)设![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/3d3eea81768840109f218466174f7983.png)
,
,证明:当
时,
的图象始终在
的图象的下方;
(3)当
时,设
,(
为自然对数的底数),
表示
导函数,求证:对于曲线
上的不同两点
,
,
,存在唯一的![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
,使直线
的斜率等于
.
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/1b4c32a0cfb14de8bc6a26a54311fedd.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6513e7d1ad16ed0ba54da88b098dc1d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/3d3eea81768840109f218466174f7983.png)
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/136995a0dea24df88860330a01092f62.png)
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/9d2148a4da27426cbc7db6e777e7a69c.png)
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/8df1a95edcd34a89b926fc168f2aa20d.png)
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/df61580512c44e8691de8efbd7e5053c.png)
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/fea3e068dd124c0ca98cbceba9b3347f.png)
(3)当
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/d6b34f6dada044619914cecb62849103.png)
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/76a965da5b87446a9308156fdaaf7d8b.png)
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/3865acfd7def4e79b7d712d720b9c02c.png)
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/52b6a1f9256449b882a840dfa9462d64.png)
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/2ec2086f962d4e64be08cb307f6d031b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6ff82ebdfad5e7de1c7487b0b817a7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a53e311ee0b5085e7e5a45c606daa5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b5300f2d0cdf34de189a6be1b518891.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/631f75b2df538cc121bad64d9deb774d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/e89b836c01ae46a68c19ed11ecb9cf6e.png)
您最近一年使用:0次
2013·海南海口·二模
6 . 切线
与圆切于点
,圆内有一点
满足
,
的平分线
交圆于
,
,延长
交圆于
,延长
交圆于
,连接
.
![](https://img.xkw.com/dksih/QBM/2013/11/26/1571400889901056/1571400896045056/STEM/cc90bcdfe8cb46ea88822b7ed471dbc9.png)
(Ⅰ)证明:
//
;
(Ⅱ)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c27f7309808e0c517168a2291cceee3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://img.xkw.com/dksih/QBM/2013/11/26/1571400889901056/1571400896045056/STEM/cc90bcdfe8cb46ea88822b7ed471dbc9.png)
(Ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
(Ⅱ)求证:
![](https://img.xkw.com/dksih/QBM/2013/11/26/1571400889901056/1571400896045056/STEM/27722750bb10488a97f33f51a063a9d9.png)
您最近一年使用:0次
名校
7 . 如图,在直三棱柱
中,
,
,
,点
分别为
的中点.
平面
;
(2)求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a9ad711b25c36dae0c2a2cedff9954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/822ba132ca9dd0d4a050659aef3c9b26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79faaf0e895a5e3edf40756d990e1161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d0fdc5a00ca0e857b89a7e1420df29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12b7b64bf23664be400db78aacc306ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fc725182c2fd1413319fea35b95c7dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
您最近一年使用:0次
2023-10-22更新
|
869次组卷
|
32卷引用:2019届贵州省黔东南州高三下学期第一次模拟考试(理)数学试题
2019届贵州省黔东南州高三下学期第一次模拟考试(理)数学试题【市级联考】海南省海口市2019届高三高考调研测试卷(理科)数学试题宁夏回族自治区银川一中2020届高三第四次模拟考试数学(理)试题广西防城港市防城中学2021届高三10月月考数学(理)试题【全国百强校】江苏省沭阳县修远中学2018-2019学年高二下学期第二次月考数学(理)试题辽宁省沈阳市郊联体2018-2019学年高二下学期期末数学(理)试题安徽省阜阳市界首市2019-2020学年高二上学期期末数学(理)试题重庆市渝北区松树桥中学校2019-2020学年高二上学期第一次段考考数学试题山西省2018-2019学年高二上学期期末联合考试数学(理)试题云南省昆明市东川区明月中学2018-2019学年高二下学期期中考试数学(文)试题人教A版(2019) 选择性必修第一册 过关斩将 第一章 空间向量与立体几何 专题强化练2 空间向量与立体几何的综合应用青海省海南州高级中学2021-2022学年高三上学期摸底考试理科数学试题辽宁省沈阳市第二中学2022-2023学年高三上学期期中数学试题上海市大同中学2024届高三上学期开学考数学试题江西省抚州市乐安县第二中学2024届高三上学期11月期中检测数学试题上海市松江一中2024届高三下学期阶段测试1数学试题(已下线)专题02 空间向量与立体几何-空间向量与立体几何的综合应用-2021-2022学年高二数学同步练习和分类专题教案(人教A版2019选择性必修第一册)(已下线)专练8 专题强化练2-空间向量与立体几何的综合应用-2021-2022学年高二数学上册同步课后专练(人版A版选择性必修第一册)(已下线)期中考试重难点专题强化训练(1)——向量的综合运用-2021-2022学年高二数学单元卷模拟(易中难)(2019人教A版选择性必修第一册+第二册)广东省佛山市南海区桂城中学2021-2022学年高二上学期第二次大测数学试题广东省信宜市第二中学2021-2022学年高二下学期月考一数学试题辽宁省鞍山市2022-2023学年高二上学期期中数学试题浙江省金华市江南中学等两校2022-2023学年高二上学期12月阶段测试数学试题安徽省合肥市庐江县2021-2022学年高二上学期期末数学试题广东省汕头市金山中学2022-2023学年高二下学期期中数学试题广东省江门市开平市2022-2023学年高二上学期期中考试数学试题广东省汕头市潮阳区河溪中学2022-2023学年高二上学期期中数学试题广东省东莞市海德实验学校2023-2024学年高二上学期10月月考数学试题安徽省安庆市第二中学2021-2022学年高二上学期10月阶段考试数学试题辽宁省辽东南协作校2023-2024学年高二上学期12月月考数学(A卷)试题云南省大理市大理州实验中学2021-2022学年高二下学期见面考试数学试题广东省东莞市光正实验学校2022-2023学年高二上学期第一次月考数学试卷
14-15高三上·甘肃兰州·期中
名校
解题方法
8 . 设
,
,
均为正数,且
,证明:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751e274e9107d780c39ba9c49d6daefb.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d689b0da0bd4803b3e8a6c69542ae466.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a3cfe361051dc5e9a3a36b2818db0.png)
您最近一年使用:0次
2023-06-19更新
|
1605次组卷
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18卷引用:2015届甘肃省兰州一中高三上学期期中考试理科数学试卷
(已下线)2015届甘肃省兰州一中高三上学期期中考试理科数学试卷(已下线)2015届甘肃省兰州一中高三上学期期中考试文科数学试卷陕西省西安市长安区第一中学2018届高三上学期第八次质量检测数学(理)试题贵州省贵阳市2023届高三上学期质量检测数学(文)试题贵州省黔南州2023届高三上学期质量监测数学(文)试题贵阳市2023届高三年级上学期质量监测数学(理)试题贵州省黔南州2023届高三上学期10月质量监测数学(理)试题江西省南昌市八一中学、洪都中学、麻丘高中等七校2018-2019学年高二下学期期末考试数学(理)试题(已下线)2019年10月13日 每周一测-学易试题君之每日一题君2019-2020学年上学期高二数学人教版(必修5)(已下线)2019年10月13日 《每日一题》 必修5-每周一测福建省宁德市古田县玉田中学2020-2021学年高一上学期第一次月考数学试题(已下线)2.2 基本不等式-2021-2022学年高一数学尖子生同步培优题典(人教A版2019必修第一册)(已下线)2.2 基本不等式(精讲)-《一隅三反》(已下线)2.2 基本不等式(重难点突破)-【冲刺满分】(已下线)3.2基本不等式-高一数学同步精品课堂(北师大版2019必修第一册)(已下线)2.2 基本不等式(第1课时)(分层练习)-【上好课】(已下线)模块一 专题2 一元二次函数、方程和不等式1(人教A)(已下线)专题04 基本不等式压轴题-【常考压轴题】
名校
解题方法
9 . 如图,在四棱锥
中,四边形
是矩形,平面
平面
,点E,F分别为
、
的中点.
(1)求证:
平面
;
(2)若
,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/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/2/66831cb6-94e7-41c0-a792-1ab136afb958.png?resizew=156)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c159d0c7cd88a41801ccbbd8e42f6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16fd1bc6147d69777b26a35d48522f7e.png)
您最近一年使用:0次
2023-08-01更新
|
226次组卷
|
13卷引用:贵州省黔东南州2018届高三下学期第二次模拟考试数学(文)试题
贵州省黔东南州2018届高三下学期第二次模拟考试数学(文)试题【全国百强校】湖南省长郡中学2018届高三下学期第一次模拟考试数学(文)试题【全国校级联考】广东省(宝安中学、 潮阳一中、桂城中学、南海中学、普宁市第二中学、中山中学、仲元中学)2018届高三5月七校高考冲刺交流数学(文)试题贵州省思南中学2018-2019学年高二下学期期末数学(文)试题辽宁省六校协作体2019-2020学年高三上学期开学考试数学(文)试卷2019年四川省仁寿一中等西南四省八校高三9月份联考数学(文)试题湖南师大附中2020届高三下学期月考(七)数学(文)试题(已下线)专题8.4 直线、平面平行的判定及性质(精练)-2021年高考数学(文)一轮复习讲练测【全国百强校】四川省双流县棠湖中学2017-2018学年高二下学期期末考试数学(文)试题山西省山西大学附属中学2020-2021学年高二上学期期中数学(文)试题山西省太原市山西大学附属中学2020-2021学年高二上学期模块诊断数学试题云南省昆明行知中学2022-2023学年高一下学期期末模拟拉练三数学试题山东省烟台第一中学2023-2024学年高二下学期2月月考数学试题
解题方法
10 . 如题图,
为圆锥的顶点,
是圆锥底面的圆心,
是底面的内接正三角形.
为
上一点,
.
![](https://img.xkw.com/dksih/QBM/2023/1/5/3146432864067584/3146801961656320/STEM/d73d6cd919bb48b6a5fe46ad4be3fa76.png?resizew=150)
(1)求证:
平面
;
(2)若
,圆锥的侧面积为
.求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b63d2504bd3ecce8c10560b142356f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19a665ba024f2840ce5aef3765249341.png)
![](https://img.xkw.com/dksih/QBM/2023/1/5/3146432864067584/3146801961656320/STEM/d73d6cd919bb48b6a5fe46ad4be3fa76.png?resizew=150)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6fe14910a40072b76a1385efd289795.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e251c2fe791c539437c4d62183b85f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
您最近一年使用:0次
2023-01-06更新
|
274次组卷
|
2卷引用:沪教版(2020) 25天高考冲刺 双新双基百分百11