名校
1 . 如图:在四棱锥中,
,
,
平面
,
,
为
的中点,
,
.
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6360c38fa4b74fe1ee3093f1e5fe862.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebce46aeb97373353179e5669365fa4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2024-01-10更新
|
859次组卷
|
4卷引用:新疆维吾尔自治区慕华·优策2023-2024学年高三上学期第一次联考数学试题
新疆维吾尔自治区慕华·优策2023-2024学年高三上学期第一次联考数学试题湖北省部分学校2023-2024学年高二上学期期末数学试题(已下线)广东省深圳市深圳中学2024届高三第一次调研数学试题(已下线)专题06 立体几何 第一讲 立体几何中的证明问题(解密讲义)
解题方法
2 . 记
为数列
的前
项和,设甲:
为等差数列,乙:
(其中
),则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/179cb87f158f055cb7b636a8b0a95ba3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70469e98fac97c6ee6232983901b53fb.png)
A.甲是乙的充分不必要条件 | B.甲是乙的必要不充分条件 |
C.甲是乙的充要条件 | D.甲是乙的既不充分也不必要条件 |
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3 . 非零数列
满足
,且
.
(1)设
,证明:数列
是等差数列;
(2)设
,求
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b613d5800d61f4a25c7c739d680292dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cefeddf71dca8ae824328df3f0e5e1e.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fee3cf29d889864199a6db7b1685f179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca857b7a6a1fe09827ecaa5f4c036069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ab0309e2cd35585ea9fb2cc3017abf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
解题方法
4 . 已知向量
在向量
上的投影向量为
,且
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/692eaf56a1bd793901875cfb88e49a0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0794011a7d94e42be21eb55d5a67edae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a90ae6fe3e1efca0d787c16c25fb6f.png)
A.![]() | B.1 | C.![]() | D.![]() |
您最近一年使用:0次
名校
5 . 已知函数
,如图,
是直线
与曲线
的两个交点,若
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a1bba2a16b86470432ffcdb6ad84916.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad58e5f29712deaf99ab98bfbbfc3abc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2f3fa679bb55ded25a9b72a8e788cb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e515607a0591459746f2ade643c45aeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a1bba2a16b86470432ffcdb6ad84916.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/20b572a8-98bc-44ee-879f-6da3e33a8cb6.png?resizew=184)
您最近一年使用:0次
解题方法
6 . 已知函数
,记函数
,其中实数
,若
的值域为
,则a的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5604f0e473b5bc29192d0816be3ca038.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44fa2c63c13cb3f92cd0fb9db87df6d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6455e38ff53ede2508e4d9cb23f0b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4d094c3c3ccc4fdff6f1743f1b1adc.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
7 . 如图,在正方形
中,点
为
上动点,点
为
上动点,满足
,将
、
分别沿
、
折起,使
、
两点重合于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/9700c52b-1c2c-4787-8826-871aee194fe4.png?resizew=315)
(1)证明:
;
(2)若
,求二面角
的平面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d38d97f03faed3152db2fd3bd1919944.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2689f0ce5ab3467d8214794d8acb2bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff00441c41fc516c37876d266fcbc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/9700c52b-1c2c-4787-8826-871aee194fe4.png?resizew=315)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa8355d95bb4c8d7c004eab4c7ce784.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cca2d187a304eab931eedc2139c23ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f8c417f5c19cc076dc6baeb0c173a9.png)
您最近一年使用:0次
名校
8 . 设
是奇函数,且在
上是减函数,
,则
的解集是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9414348d57c7fc77dcfa8f0744cb0c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/196be101149acfb6a6c4ceca7fc96828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8b03af66c2b6d916b41321d7bb292f1.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
名校
9 . 在棱长为4的正方体
中,点
分别是线段
和
的四等分点,分别满足
建系如图,解答下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/707b19ee-7b73-4c76-b73b-ccc661925046.png?resizew=199)
(1)求
和
所成角的余弦值;
(2)点
是线段
的四等分点,满足
求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20e57e2c1b68189c58a1d1eb5db8f018.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/707b19ee-7b73-4c76-b73b-ccc661925046.png?resizew=199)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfca8aa367e30ec87b8c80b9358c0d55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7977ab975efa6411cc17de39be70d9.png)
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解题方法
10 . 下列函数中既是奇函数,又在区间
上单调递减的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次