1 . 如图所示,在三棱锥S-BCD中,平面
平面
,A是线段
上的点,
为等边三角形,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/6/c8a6185f-5c11-4328-9f9d-06c9de228ee4.png?resizew=146)
(1)若
,求证:
;
(2)若直线
与平面
所成角的正弦值为
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dd470cd9dfcde7f7e1762af28bc649c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/defa5b53043ae802bb1af7d14374406d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79482c6de6bbd05affc78f9c625e52f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/110ecc0091f3ddc972869a14f7ebd7d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0145146072252a8813a880648b2ae557.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/6/c8a6185f-5c11-4328-9f9d-06c9de228ee4.png?resizew=146)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc3ffec2558e590c0712e77d7ab27ec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b287ca176bb1ad5f7cb76c815c2953d.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ef796b46e68fe77b117ff0483d2370c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f00d5ad6666e6d54e0b2cbe89902132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
您最近一年使用:0次
2022-10-04更新
|
456次组卷
|
4卷引用:2020届百校联考高考百日冲刺金卷全国Ⅰ卷·数学(理)(一)试题
名校
解题方法
2 . 在
中,角A,B,C所对的边分别为a,b,C,且
.
(1)求证:
;
(2)求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcc59a08ff6146a651115e1209925ccb.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c5cfb6a83413cffd657eae19813e381.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9ba08d1dd82070b1d9245faaa8057e5.png)
您最近一年使用:0次
2022-10-11更新
|
392次组卷
|
7卷引用:2020届吉林省长春市高三质量监测(三)(三模)数学(理)试题
2020届吉林省长春市高三质量监测(三)(三模)数学(理)试题江西省宜春市上高二中2021届高三热身考数学(文)试题(已下线)2022年全国新高考Ⅰ卷数学试题变式题9-12题湖南省长沙市第一中学2021-2022学年高一下学期期末数学试题(已下线)2022年全国新高考Ⅰ卷数学试题变式题17-19题江苏省南京市第二十九中学2022-2023学年高二上学期10月月考数学试题河北省武邑中学2023-2024学年高三上学期1月期末考试数学试题
解题方法
3 . 证明双曲线的一条切线与两条渐近线的交点与该双曲线的两个焦点四点共圆.
您最近一年使用:0次
真题
4 . 如图,在五棱锥
中,
底面
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/dfed0b05-2ba1-4d10-bfd2-7041decb772b.png?resizew=163)
(1)求异面直线
与
所成的角;(用反三角函数值表示)
(2)证明:
平面
;
(3)用反三角函数值表示二面角
的大小.(本小问不必写出解答过程)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/989babd4c8db2422e5d239e03dae94b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c83f8945042b9c8fb2fbdac9308d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96c6a57517fb8cdbe016cdee4aa64756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7fc9b1a395ad2e2fb2b207560754dc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73320c736844aaf8e0cc98542a227513.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/dfed0b05-2ba1-4d10-bfd2-7041decb772b.png?resizew=163)
(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4db9b82b67efe45a02fca32bfcf5dc.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9c9cfa597b444b5c9dbae7a825a695.png)
(3)用反三角函数值表示二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c53f1e79257ff52a0408fdc482488d0.png)
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名校
5 . 在三棱柱
中,侧面
为矩形,
,
,D在棱
上,且
,
与
交于点O,且
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/46a47f2d-4999-402c-8ec4-f19e4a71a270.png?resizew=178)
(1)证明:
;
(2)若
,求直线
与平面
所成角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b7b7793d29d66dfdd89e7a6564a35c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeab46157999e3163d89991282890186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeebdf3d00c146a1b4d220909d7573c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b7b7793d29d66dfdd89e7a6564a35c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/46a47f2d-4999-402c-8ec4-f19e4a71a270.png?resizew=178)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7768503b1ad4775258b2f1a71c413086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f842145a92b63d04c0fe88001f01d31e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
名校
解题方法
6 . 如图,在四棱锥
中,侧棱
底面
,底面
是直角梯形,
,
,且
,
,
是
的中点.
平面
;
(2)在线段
上是否存在一点
,使得
平面
?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.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/c30f6595dd643813b11ad71df61a10dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0e5697eca3f5205cb7b343648240bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d262480ffb55b7617f44b63f130c154a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40d4d36ae30487030b827ce9413b9f13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/137fcdac119eff6ac5990b6d201615df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a29292b2a3a66375202bca1fb986ecb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e51f5e209c00a8c8bef25aec515873fa.png)
您最近一年使用:0次
2022-07-12更新
|
930次组卷
|
7卷引用:吉林省四平市第一高级中学2019-2020学年高二上学期期中考试数学(理)试题
吉林省四平市第一高级中学2019-2020学年高二上学期期中考试数学(理)试题河南省开封市五县2021-2022学年高一下学期期末考试数学试题(已下线)8.6.2直线与平面垂直的判定定理(第1课时)(精讲)(1)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)(已下线)立体几何专题:立体几何探索性问题的8种考法(已下线)第03讲 空间中平行、垂直问题10种常见考法归类(2)(已下线)专题6-3立体几何大题综合归类-2河北省沧州市献县第一中学2023-2024学年高一下学期第三次月考数学试题
真题
解题方法
7 . 对定义域是
的函数
,
规定:函数
.
(1)若函数
,写出函数
的解析式;
(2)求问题(1)中函数
的值域;
(3)若
,其中
是常数,且
,请设计一个定义域为R的函数
及一个
的值,使得
,并予以证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0606be557187bb410105f7c9e7df32b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18320524896150a2d5cd223c6eb46182.png)
规定:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06f0939cd48b6dddb2131b485aff7b38.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8065c588f43d8ddc2ca3987f45022c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
(2)求问题(1)中函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/424a743a9d5c65ec8976c5c041912d07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/941647c1647511a05d56a58f0a21472d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1801eb64c822b33cfff1051cc8c5c96d.png)
您最近一年使用:0次
真题
解题方法
8 . 设函数
.
(1)证明
,其中k为整数;
(2)设
为
的一个极值点,证明
;
(3)设
在
内的全部极值点按从小到大的顺序排列
,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d2a78d0eafddbe5edf83e86791d6cf.png)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf1626febdc487c710ffb74d54f33d4.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3849d60a586fa54660cd3d653b01c66.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2506385d68e133523a24a5f5770adb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/420314a5c70a97f508023e7f92762091.png)
您最近一年使用:0次
真题
解题方法
9 . 已知向量
,令
.是否存在实数
,使
(其中
是
的导函数)?若存在,则求出x的值;若不存在,则证明之.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ebea1eceb066c033241f664e8417810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc1525aee9019a25cf71dc6054ec1ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27794407a3d82a6746f7e0871051f486.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d112a6c8236ee32e5725221b840b50ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
10 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd6c986a535c4391f13f64c0db26ae4c.png)
(1)求函数
的值域;
(2)判断函数
在其定义域上的单调性,并利用函数单调性的定义证明;
(3)是否存在正数
,使得不等式
对任意的
及任意的锐角
都成立,若存在,求出正数
的取值范围,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd6c986a535c4391f13f64c0db26ae4c.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb788ae88e457017bb81120b6a2e5ee.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb788ae88e457017bb81120b6a2e5ee.png)
(3)是否存在正数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08075b3b73dd2609baad69a496fdd9a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e296b873860e05cc4175ff8fb07706d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7bc5c9d1e00cbdd13eebb609d595553.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fe211e0dea7a44863e5e1706633c3aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08075b3b73dd2609baad69a496fdd9a8.png)
您最近一年使用:0次