名校
解题方法
1 . 已知正方体
的棱长为1,点P是底面正方形
对角线
上一动点(含端点),则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
A.![]() ![]() |
B.三棱锥![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.以![]() ![]() ![]() |
您最近一年使用:0次
2 . 如图,在四棱台
中,
平面
,底面
为平行四边形,
,且
分别为线段
的中点.
.
(2)证明:平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd66687a8c0d2d00ba430b040e9f647.png)
平面
.
(3)若
,当
与平面
所成的角最大时,求四棱台
的体积
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417104247ce266ae42c3a9860f387272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e658d7985a600629fdf01517fc55c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac18faf9da6221b788020ac0ddf709b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fab0d028634166a93c5d80add98dc27.png)
(2)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd66687a8c0d2d00ba430b040e9f647.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faec6f7381dbe8daf15b2969f379e3d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
您最近一年使用:0次
7日内更新
|
678次组卷
|
5卷引用:河北省邢台市邢襄联盟2023-2024学年高一下学期第三次月考数学试题
名校
3 . 刻画空间的弯曲性是几何研究的重要内容,用曲率刻画空间的弯曲性,规定:多面体顶点的曲率等于
与多面体在该点的面角之和的差,其中多面体的面的内角叫做多面体的面角,角度用弧度制.例如:正方体每个顶点均有3个面角,每个面角均为
,故其各个顶点的曲率均为
.如图,在直三棱柱
中,
,点
的曲率为
分别为
的中点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35e2d7c958e99bcd9d7f251c19ee3544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49f8a63ddbca52039fa9ab44cda6b29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62837b40813c7cd7959f4e77eeca8a6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db4c9668ea27ff0d5323dbf8c65ddcd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df332962ba616c7ef45a0523d410c95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53477a5d40457f154d8afe0bcec4a549.png)
A.直线![]() ![]() |
B.在三棱柱![]() ![]() ![]() |
C.在四面体![]() ![]() ![]() |
D.二面角![]() ![]() |
您最近一年使用:0次
7日内更新
|
705次组卷
|
6卷引用:河北省邢台市邢襄联盟2023-2024学年高一下学期第三次月考数学试题
名校
4 . 如图,已知直三棱柱
的所有棱长均为3,
分别在棱
,
上,且
分别为
的中点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a898391acfefad6656a81913f51d0255.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4fb1884afa6b9d2625b489d6a0b4667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30c66a2e690e16481dea00b24703149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c254c270c8358673abfee56c3f2ff485.png)
A.![]() ![]() |
B.若![]() ![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.过点![]() ![]() ![]() ![]() |
您最近一年使用:0次
2024-06-03更新
|
1125次组卷
|
3卷引用:河北省保定市曲阳县第一高级中学2023-2024学年高一下学期5月月考数学试卷
名校
解题方法
5 . 用一个内底面直径为3,高为20的圆柱体塑料桶去装直径为2的小球,最多能装下小球个数为( )
A.10 | B.11 | C.12 | D.13 |
您最近一年使用:0次
2024-05-31更新
|
586次组卷
|
2卷引用:河北省邯郸市大名县第一中学2023-2024学年高一下学期5月月考数学试卷
名校
6 . 已知函数
,下列四个命题正确的是______ .(只填序号)
①函数
的单调递增区间是
;
②若
,其中
,
,
,则
;
③若
的值域为
,则
;
④若
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dde2a965644fb3271f5d1499a6d0f1a8.png)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e9cb0c55afd6604ca0a05b5e0ec6d26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bbb1af40cb43a243938534580b84559.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd45196ee60ef6f01c9c8f262777115c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f83fb225dae1f42c3eb8da461fe61b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca27cc54ca0332245f5167488daa3408.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6d1422d2776494cfd5e8ca695bc0e05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66a09145206ea1060dbba927a9d12569.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8974344dff2bc357c7e63b84dbd05517.png)
您最近一年使用:0次
名校
7 . 已知向量
,若函数
.
(1)求函数
的最小正周期;
(2)若
,求
的最值及取得最值时的
值;
(3)若函数
在
内有且只有一个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0b7df22c38eb1efabf5439faab7fb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a636abb4a7d756eb1c3e120df822830b.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa0b13116954f6338e1b3048d37a70d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25079f12119793682bee7dcd103d12e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e32a34b3381654b4e3a7e0324b896b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2024-05-11更新
|
572次组卷
|
4卷引用:河北省邢台市第一中学2023-2024学年高一下学期5月期中测试数学试题
名校
8 . “阿基米德多面体”也称为半正多面体,是由边数不全相同的正多边形围成的多面体,它体现了数学的对称美.如图所示,将正方体沿交同一顶点的三条棱的中点截去一个三棱锥,共可截去八个三棱锥,得到八个面为正三角形、六个面为正方形的一种阿基米德多面体.已知
,则关于图中的半正多面体,下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
A.该半正多面体的体积为![]() |
B.该半正多面体过![]() ![]() ![]() ![]() |
C.该半正多面体外接球的表面积为![]() |
D.该半正多面体的表面积为![]() |
您最近一年使用:0次
2024-05-11更新
|
838次组卷
|
3卷引用:河北省保定市曲阳县第一高级中学2023-2024学年高一下学期5月月考数学试卷
名校
解题方法
9 . 已知正实数
满足
则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aef6e9dfd58cfd234fa1be807fd5bb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80fd3e7d8b89e0aab95a769c2ec39c7.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-05-09更新
|
723次组卷
|
2卷引用:河北省保定市第一中学第八届1+3贯通班2023-2024学年高一下学期期中考试数学试卷
名校
10 . 已知圆锥
的侧面展开图是圆心角为
,半径为2的扇形,
是两条母线,
是
的中点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ab709684151600ffd28410a8b2ca5dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d9fe8127948792720ee8c94945fd8aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e11985558ada4af5aab3289d4c761ff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff6089095a8b825eeb8002b6996929e.png)
A.圆锥![]() ![]() |
B.![]() ![]() |
C.当![]() ![]() ![]() ![]() |
D.圆锥![]() ![]() |
您最近一年使用:0次