名校
解题方法
1 . 如图,在直三棱柱
中,
,
,
,
分别是棱
,
上的动点;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/914aa727-2d10-4c14-8cab-e8896b5bdfbc.png?resizew=157)
(1)当
时,求证:
;
(2)已知
为
中点时,线段
上是否存在点
,使得平面
与平面
夹角的余弦值为
,若存在,请确定点
的位置,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71f2185273bf04c11118c7954f7ec822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4a5de1a00f05882ed47060b96f6df4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/914aa727-2d10-4c14-8cab-e8896b5bdfbc.png?resizew=157)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f8eebda19eded2b059774a8c2666c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c6898dcd2374de8bed162d63903fa2.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417022242845ca611c8b0c2edc484710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
您最近一年使用:0次
名校
2 . 在长方体
中,
,
为
上的动点,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/5b34a9a5-1dda-4e23-8f99-1deaa56e5ca8.png?resizew=183)
(1)求证:
平面
;
(2)求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15f1ca1e7fc797910b273a4aeb2fb1d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/020ebe1219437129358b986eb9e70bbf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/5b34a9a5-1dda-4e23-8f99-1deaa56e5ca8.png?resizew=183)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd944227ab37efdbf247bf445e160de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd148d264bc9043396f777523e907aa.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e663220a66eff19da6a71e46b397db2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10dd1672822a208909bc5714e6153870.png)
您最近一年使用:0次
名校
3 . 有很多立体图形都体现了数学的对称美,其中半正多面体是由两种或两种以上的正多边形围成的多面体,半正多面体因其最早由阿基米德研究发现,故也被称作阿基米德体.如图,这是一个棱数为24,棱长为
的半正多面体,它的所有顶点都在同一个正方体的表面上,可以看成是由一个正方体截去八个一样的四面体所得.若点
为线段
上的动点(包含端点),则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/fe69bb56-d46c-4fc8-859a-9e2f0fa954b0.png?resizew=158)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/fe69bb56-d46c-4fc8-859a-9e2f0fa954b0.png?resizew=158)
A.该半正多面体的体积为![]() |
B.当点![]() ![]() ![]() |
C.当点![]() ![]() ![]() ![]() |
D.直线![]() ![]() ![]() |
您最近一年使用:0次
2022-11-10更新
|
251次组卷
|
2卷引用:云南省玉溪市第一中学2022-2023学年高二上学期期中考试数学试题
解题方法
4 . 已知集合
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
请在①充分条件,②必要条件,③充要条件这三个条件中任选一个,补充在下面问题(2)中,若问题(2)中的实数
存在,求出
的取值范围;若不存在,请说明理由.
(1)若
,求实数
的取值范围;
(2)若
是
的________条件,判断实数
是否存在?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e4b49908b67430db35e9e570e4e3a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a22d3ade5bde5152dd6b47b4e68b58e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbe46a98a8fdebfc46fcbc45dc88e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解题方法
5 . (1)已知
,
,用作差法证明:
;
(2)已知
,
都是正数,求证
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c79de030dea51c5e80e233b44788de.png)
(2)已知
![](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/cc98f6e2b1d41bc552c083979f53a83d.png)
您最近一年使用:0次
解题方法
6 . 设函数
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6855784817151468771f29c0fc38fc9.png)
(1)若
,求不等式
的最小值;
(2)若
在R上恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6519f19f62269ccb49c7e840dab6468.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6855784817151468771f29c0fc38fc9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce460941cf3ff54ccb6aec5085689a91.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be1d8c6384d7fabddb693b2b7fcdf4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
解题方法
7 . 已知
为坐标原点,
,
是抛物线
:
上的一点,
为其焦点,若
与双曲线
的右焦点重合,则下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff2595e01e8751886a27862cce04e2d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a218602e8e3a52f74f760059aa7014.png)
A.若![]() ![]() |
B.该抛物线的准线被双曲线所截得的线段长度为![]() |
C.若![]() ![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
解题方法
8 . 已知
是定义域为
的奇函数,当
时,
.
(1)求
的解析式;
(2)判断
在
上的单调性,并用定义证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e541ea2f855f981c96207070683d388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbe2c980f4676fa2e1b51f7ec2e76e62.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
您最近一年使用:0次
2022-11-07更新
|
168次组卷
|
2卷引用:云南省部分名校2022-2023学年高一上学期11月期中考试数学试题
解题方法
9 . 已知幂函数
在
上单调递减.
(1)求
的值;
(2)若函数
的图象与
轴交于
,
两点,求
在
上的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e59125b78ae79a18620917338c98d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9347bb4ffedcbea2f4c16d047a138d75.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8972e0b987d0f126a60b0ae8d8d5d56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fbdef5d0c05acbf63fa72fa85c5bb45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42f409d09ee4c68dd167d9dc62dd58a4.png)
您最近一年使用:0次
2022-11-07更新
|
337次组卷
|
3卷引用:云南省部分名校2022-2023学年高一上学期11月期中考试数学试题
解题方法
10 . 奇函数
在
上为增函数,且
,则不等式
的解集是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad2edd8edcb21bd41584daf9bb95a5c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef2635c6e599f816c706e471a3c197d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c79741ac1f7bc8aec26134aa96846bc6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-11-05更新
|
541次组卷
|
4卷引用:云南省曲靖市第二中学2022-2023学年高一上学期期中考试数学试题