名校
解题方法
1 . 已知椭圆
的离心率为
,上顶点
.
(1)求椭圆
的标准方程;
(2)
为坐标原点,
,点
是椭圆
上的动点,过
作直线
分别交椭圆
于另外
三点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6265f5256804ccaff618cf8c0675eb8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0adc439eabb8acf3806ac8af85f0410.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d7fae066efa772e21142aef5f764018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/660121fc2cb1cafd455af6afeea6761b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0b5edc50b90f15727d05ff59e34da87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/461850d7e3c0bd2ad242567ed5234f7c.png)
您最近一年使用:0次
2024-01-16更新
|
762次组卷
|
5卷引用:重庆市渝中区巴蜀中学校2023-2024学年高二上学期期末数学试题
名校
解题方法
2 . 正四面体的外接球与内切球的半径比为( )
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-01-16更新
|
566次组卷
|
4卷引用:重庆市渝中区巴蜀中学校2023-2024学年高二上学期期末数学试题
重庆市渝中区巴蜀中学校2023-2024学年高二上学期期末数学试题重庆市巴蜀中学校2023-2024学年高二上学期期末考试数学试题(已下线)第17讲 第八章 立体几何初步 章末重点题型大总结-【帮课堂】(人教A版2019必修第二册)(已下线)第十一章:立体几何初步章末重点题型复习(1)-同步精品课堂(人教B版2019必修第四册)
名校
3 . 如图,在多面体
中,平面
平面
,四边形
为菱形,
,底面
为直角梯形,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/8/f7d26fb2-cac4-46ed-962b-abfac9c5e998.png?resizew=166)
(1)证明:
;
(2)在
上是否存在点
,使得平面
与平面
夹角的余弦值为
,若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8c595bc64da14b0f78019c54da608d.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/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52d46a90cc593b469de74f4dbbec56b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/8/f7d26fb2-cac4-46ed-962b-abfac9c5e998.png?resizew=166)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c252a0fe067d434a2b5aeac011b9914.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2319a01218514917e446dfc807a625ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f35614aff055b98b76ca262f64e629d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85fce39ef6db254d91d5a147b95da23a.png)
您最近一年使用:0次
2023-11-15更新
|
298次组卷
|
3卷引用:重庆市巴蜀中学校2023-2024学年高二上学期10月月考数学试题
名校
4 . 正四棱台
中,上底面
的边长为2,下底面
的边长为4,棱台高为
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/31/516850b2-7ae5-42f8-8474-34abf23f1885.png?resizew=166)
A.该四棱台的体积为![]() |
B.该四棱台的侧棱长为2 |
C.![]() |
D.几何体![]() |
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名校
解题方法
5 . 如图1,菱形
中
,动点
在边
上(不含端点),且存在实数
使
,沿
将
向上折起得到
,使得平面
平面
,如图2所示.
(1)若
,设三棱锥
和四棱锥
的体积分别为
,求
;
(2)当点
的位置变化时,平面
与平面
的夹角(锐角)的余弦值是否为定值,若是,求出该余弦值,若不是,说明理由;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e918b70b02a73685e3c536c7f380e2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea77ba313fcc751481ac1ca214df3fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d6ecf91c009c100a2adc1eab48d3bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b51d3992644d37dc71c9b5a97d515c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f020ca4ad44801691235958e253907d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae27598851148e664c4af461f539356e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/7/ebc0d9ea-cfa1-4c32-828a-feb4d3ad0f30.png?resizew=342)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90d23f34a0d1095678f4532f2a7f4c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a9ec3b527947cad9caa4537e0cb7e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/901a2782695f963fe55a1aeaacb927c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46bd37096f7014e00fd079823b6c3c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f737b04ce09bc7e1ed86dc9b3c85203b.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb64b597234df6eab4f92cf010c87fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5395f1811518a917a30e5949c4c8fc57.png)
您最近一年使用:0次
2023-10-18更新
|
149次组卷
|
2卷引用:重庆市第二十九中学2023-2024学年高二上学期10月月考数学试题
名校
解题方法
6 . 如图,四棱柱
为平行六面体,
为
的中点.
(1)若点
满足
,求证:
四点共面;
(2)若
为正方体,求直线
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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/7/3119f3de-5e6a-44db-83b7-8d3080e4bd44.png?resizew=177)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7115ad722348fd88428fe9febf7f2442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a328378487c776ac0fe6482ac4309c9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fed2f706801662432b68797e72647c6e.png)
您最近一年使用:0次
名校
7 . 已知
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/705d0cd198f423d1a7d6b9a7999c18ee.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3c0027db8298f230ca73bce53bed975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1afa49dbaa99a0d7a7a6d18b3fe42091.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/705d0cd198f423d1a7d6b9a7999c18ee.png)
您最近一年使用:0次
2023-10-18更新
|
164次组卷
|
2卷引用:重庆市第二十九中学2023-2024学年高二上学期10月月考数学试题
名校
解题方法
8 . 设
是两条不同的直线,
是两个不同的平面( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次
名校
解题方法
9 . 已知直线
与
平行,则实数
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa95e38a695bef7cc0da64639e1a8634.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e517b8489234c7c01201b1667120a3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
A.0 | B.![]() | C.0或![]() | D.0或![]() |
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名校
解题方法
10 . 四棱锥
的底面为正方形,
与底面垂直,
,动点
在线段
上,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05fdb57f6e0df439872a99e50bcee2d9.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/editorImg/2023/11/1/5f848335-19d2-4e67-9524-fd0f0846b47e.png?resizew=125)
A.存在点![]() ![]() |
B.![]() |
C.![]() ![]() ![]() |
D.三棱锥![]() ![]() ![]() |
您最近一年使用:0次
2023-10-13更新
|
434次组卷
|
4卷引用:重庆市巴蜀中学校2023-2024学年高二上学期10月月考数学试题