名校
解题方法
1 . 三阶行列式是解决复杂代数运算的算法,其运算法则如下:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281c685c6a79c8293c8b5083c3a8dc4c.png)
若
,则称
为空间向量
与
的叉乘,其中
,
,
为单位正交基底. 以
为坐标原点、分别以
,
,
的方向为
轴、
轴、
轴的正方向建立空间直角坐标系,已知
,
是空间直角坐标系中异于
的不同两点
(1)①若
,
,求
;
②证明
.
(2)记
的面积为
,证明:
.
(3)证明:
的几何意义表示以
为底面、
为高的三棱锥体积的
倍.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281c685c6a79c8293c8b5083c3a8dc4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e91aaddb8691f8afa477a96bf630631.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aba64ae92194bc4f0f6e49725471542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8643f24c3af715421ec0ccd3224ed453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d541143135cb9b8166bc631a85ac6a41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a471332d4f3731d90f62fdf819f39824.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e73db31aecdde14e0002f082d9091df0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2980a18e4d0a2a795b7983a1a1866db7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1821c677712026f8de34fe924b1f52a.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/e81e59019989b7dc2fb59b037ef6e010.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/1dde8112e8eb968fd042418dd632759e.png)
(1)①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41ef077626c88964805a45849471a1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bb22d1c614d99e2639864e43f4b6277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00db2bada2cfc90c5213aca8af17df4c.png)
②证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bb8623a42db5ceb745a16d72739f513.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29aa828f2bd9a5e63ee58dcaa9d0d336.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0505ce82dd5726c22fcaac54d01d630b.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8191a760981f2d67648905665c8b167a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad58b362528b814739ceb7fe5febfc28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
您最近一年使用:0次
2024-03-07更新
|
895次组卷
|
8卷引用:河南省部分重点高中2024届高三普通高等学校招生全国统一考试(期末联考)数学试卷
河南省部分重点高中2024届高三普通高等学校招生全国统一考试(期末联考)数学试卷江苏省扬州市仪征中学2024届高三下学期期初调研测试数学试题 河南省部分重点高中(青桐鸣)2023-2024学年高三上学期期末大联考数学试题(已下线)专题22 新高考新题型第19题新定义压轴解答题归纳(9大核心考点)(讲义)江苏省江都中学2023-2024学年高二下学期3月联考数学试卷江苏省盱眙中学2023-2024学年高二下学期第一次学情调研数学试题(已下线)第七章 应用空间向量解立体几何问题拓展 专题二 平面法向量求法及其应用 微点2 平面法向量求法及其应用(二)【培优版】(已下线)专题08 期末必刷解答题专题训练的7种常考题型归类-期末真题分类汇编(北师大版2019必修第二册)
2 . 已知数表
,
,
,其中
,
,
分别表示
,
,
中第
行第
列的数.若
,则称
是
,
的生成数表.
(1)若数表
,
,且
是
,
的生成数表,求
;
(2)对
,
,
数表
,
,
与
满足第i行第j列的数对应相同(
).
是
,
的生成数表,且
.
(ⅰ)求
,
;
(ⅱ)若
恒成立,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9269360e275b7d80b6cdc272af8eedbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3703fa838be7c2c7ae3944fc24536cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5e30310b713914b2b021d9ffa89dee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a14c188b1c9d61aa237b137ba18023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/223f93ed43c7772a367043ae224b75da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2cf56fabf5a66f4f99e499bf371846.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b11e86b3abf5d95a36a9cc611534780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa4dbfb36335e29c3ebca8dca33d4e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d03e28332446eea06a9bd61050d38373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a67fcefc49af5da7ca9016c80e6a1ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d03e28332446eea06a9bd61050d38373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b11e86b3abf5d95a36a9cc611534780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa4dbfb36335e29c3ebca8dca33d4e1.png)
(1)若数表
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7a413014cfac660883ba4bbb844b255.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/025393abcedb4f6dd0b1be720a7b955f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/647c97da671781944dcbac93af7cadcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/174541741f9d18ca1394943abd2ed0aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/403e9c8769f452f0c9e69a178b3c0cb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/647c97da671781944dcbac93af7cadcb.png)
(2)对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f8365233f341451598eb50525a1557a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
数表
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cce60f9ae46219ff2567aa1470fd1a54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfd6a98dcb4b1455486e05a9141b8dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d946a5730d33d84577c7bc4a69b9e96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/160710545968157b392c210012e81ee3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2ffc1d9460ea481e699ed84da936250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f91d58007c604e83eb066e79e8cc88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b11e86b3abf5d95a36a9cc611534780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d946a5730d33d84577c7bc4a69b9e96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb4e0386d1ce782d770ef7236edbea7c.png)
(ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e542a1e1667a89ce2e20a2b52b42e359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7023dd3e3bac9a9b47e75d2976b0efab.png)
(ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28c96a64acdc0c29543dae62909b4e5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
3 . 已知
和数表
,其中
.若数表
满足如下两个性质,则称数表
由
生成.
①任意
中有三个
,一个3;
②存在
,使
中恰有三个数相等.
(1)判断数表
是否由
生成;(结论无需证明)
(2)是否存在数表
由
生成?说明理由;
(3)若存在数表
由
生成,写出
所有可能的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1b76c6898e230717d3daed334b0303.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbda44091b0da7321b26722d6ab78845.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac56300140ed9e27f8dff86ef1eaea0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24c7d6627a568c6eaae35260d53dfb29.png)
①任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f29210b9144737a127a428679c58f406.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
②存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd600b451b2b7f1680cbbcf36a49703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5137f97e66d136940d82a4027cd4fa2b.png)
(1)判断数表
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a97e4a4a351df2053a3cab244213d41c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e88b1329f12c3b53e86627d04f5e5a3.png)
(2)是否存在数表
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79dc44942df9856c903cd70e4776e86b.png)
(3)若存在数表
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0808a749c7fe9d45bea1edbd3ee96e20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f44f67ab69be2217f7884536cfa53aa.png)
您最近一年使用:0次
2024-01-17更新
|
1074次组卷
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6卷引用:北京市第一次普通高中2023-2024学年高二上学期学业水平合格性考试数学试题
北京市第一次普通高中2023-2024学年高二上学期学业水平合格性考试数学试题辽宁省沈阳市第二中学2024届高三下学期开学考试数学试题(已下线)第一套 新高考新结构全真模拟1(艺体生)(模块二)(已下线)微考点8-1 新高考新题型19题新定义题型精选北京市第二中学2023-2024学年高一下学期期中考试数学试题2024届河北省名校联盟高考三模数学试题
4 . 设
为全体由
和1构成的
元数组的集合,其中
为偶数.称
与
正交,若
.记
为可以从
中选出
元数组个数的最大值,满足选出的数组两两正交.求
和
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318f55d136f3b38a2a5f529fd17f1f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b4cd18676efcd11a591ab3e4d2085b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ea378cc281cb24fc593bedb34dab3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4fc8faefb26b233d4aa9dbef043aae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45cc3f52cd9edf88e49e2409f050108d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88d75967b4ca5e79d2493d1eac59d230.png)
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5 . 设
、
、
、
,称
为二阶方阵,全体二阶方阵构成的集合记为
,定义
中的两种运算:①
,
,
;②设
,
,则下列说法正确的有( )
![](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/7a876ecb804eb0553c246e5fcc40b708.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833a07e00e7ba9e23b1d6ef7ede078d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833a07e00e7ba9e23b1d6ef7ede078d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e8eda61001da71270bdca6586893a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00805ad79d2941bc7e16af7bf6bdb42b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833a07e00e7ba9e23b1d6ef7ede078d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3963548c61d6aa7107f6c4fa8460b246.png)
A.![]() ![]() ![]() |
B.![]() ![]() ![]() |
C.![]() ![]() ![]() |
D.![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
6 . 定义
,已知数列
为等比数列,且
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c8894e0b37af5da23a1c1bffb32017.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fa69dde104dcf963e67647e801e0149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/815f2a2e1a70d691353baf6a664de4ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb7147e313f9d9f67d19ecb5f499c05.png)
A.4 | B.±4 | C.8 | D.±8 |
您最近一年使用:0次
2023-04-23更新
|
1741次组卷
|
10卷引用:黑龙江大庆市2023届高三三模数学试题
黑龙江大庆市2023届高三三模数学试题吉林省长春吉大附中实验学校2022-2023学年高三下学期第四次摸底考试数学试卷江西省宜春市樟树市清江中学2022-2023学年高二下学期5月期中考试数学试题福建省厦门第一中学2022-2023学年高二下学期期末考试数学试题福建省宁德第一中学2023-2024学年高二上学期10月学科素养数学试题(已下线)吉林省长春市长春吉大附中实验学校2023-2024学年高二上学期1月期末数学试题宁夏石嘴山市第三中学2022-2023学年高二下学期期末数学(文)试题(已下线)压轴题数列新定义题(九省联考第19题模式)练广东省珠海市实验中学、河源高级中学、中山市实验中学2023-2024学年高二下学期4月联考数学试题四川省内江市第六中学2023-2024学年高二下学期期中考试数学试卷
名校
7 . 设2阶方矩阵
,则矩阵A所对应的矩阵变换为:
,其中
,
,其意义是把点
变换为点
,矩阵M叫做变换矩阵.
(1)当变换矩阵
时,点
,
经矩阵变换后得到点分别是
,
,求经过
,
的直线的方程;
(2)当变换矩阵
,点
经矩阵
的作用变换后得到点
,求实数m,n的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66226d08dd84a2e6dc096c3fcfc7e41c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc163fa0a2929ff019012aa3623088b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/909e45af90756a0dc1fee910b1661974.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8061249592e9502a68f0d5b52172724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b08f646952c521d4f022af322b179a0a.png)
(1)当变换矩阵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd8b0cf31caa3e7c5c7dced1559726f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a98ef6b26186130f8d88c66d3b3c78fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f87cae2228b72a1ec635860203496967.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5326817f9af012432a202749d1df59f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39e210795a966bd5dc1293479ab1988b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5326817f9af012432a202749d1df59f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39e210795a966bd5dc1293479ab1988b.png)
(2)当变换矩阵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5184ca29a211cfb1c6b492993a608edd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/518dfce0a9aab04171383586c5077146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8fd27ebdd03bd80b1843c3f79e55ee.png)
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2022高三·全国·专题练习
名校
8 . 已知行列式
=6,则
=__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1294ff156395184b57b6baee6e3a9b58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9167e52350fa18200d3288eee158893c.png)
您最近一年使用:0次
名校
9 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edff1881635893293dd411ead8194aca.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d823a41c1014865c4ca95ca3fa75781.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edff1881635893293dd411ead8194aca.png)
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