名校
1 . 设平面向量
、
的夹角为
,
.已知
,
,
.
(1)求
的解析式;
(2)若
﹐证明:不等式
在
上恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/956879af388928628970155bdb5c2737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f8e69e4abd4e261077ed177c25ff74d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e074c209d628251349ecb15d76dfaa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cafdd5eff594c3ac6bc585b05c644fe5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31bcd4e186c9b564603e00e4dfd0e8dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe58c11b71e0ce7e6263b8112aa6140c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51742bc5df0b18cd3a6ca5abfb373bcc.png)
您最近一年使用:0次
2023-06-28更新
|
413次组卷
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3卷引用:安徽省定远中学2023-2024学年高一第六次阶段检测数学试卷
2 . 已知
.
(1)求函数
的值域;
(2)当
时,
①讨论函数
的零点个数;
②若函数
有两个零点
,
,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2994d9222e26881896ea3463cc10ed62.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/426b57deeafba82e8b8cb4f4c235d5f2.png)
①讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
②若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8aa28cb96e867cb177522cd24009a9.png)
您最近一年使用:0次
2023-06-17更新
|
496次组卷
|
4卷引用:江西省景德镇市2022-2023学年高一下学期期中质量检测(4月)数学试题
江西省景德镇市2022-2023学年高一下学期期中质量检测(4月)数学试题广东省珠海市香洲区香樟中学2022-2023学年高一下学期5月月考数学试题(已下线)专题突破卷07 导数与零点问题(已下线)专题07 函数与导数常考压轴解答题(练习)
名校
解题方法
3 . 在
中,角A,B,C所对的边分别为a,b,c,
.
(1)证明:
;
(2)证明:
;
(3)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e6576d4d349d7180332d3c2abdeeb51.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dcad85c5459c1f6b6425c0c43edcd1.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f44c181a2f6ae22d5d52b374768dc57.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2bcb0cf5182f70cf5f2737b709b4a9c.png)
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名校
4 . 如图所示的矩形
中,
分别为线段
上的动点.
为靠近
的三等分点,
为
的中点,且
,求
的值;
(2)若
是边长为1的正三角形.
(i)令
、
、
的面积分别为
,
,
,证明:
;
(ii)求矩形
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374fe9986ebbc986fc422e514ab93a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](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/c562ffebf701e6d812eed6fc898fb42b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
(i)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13668f033d00acfc366f7e47949c4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d85bcd207e761df740d87a6acb81bf7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/485fd8aa254b523bef30560500ccaf41.png)
(ii)求矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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2023-04-19更新
|
1041次组卷
|
4卷引用:江苏省南京市协同体七校2022-2023学年高一下学期期中联考数学试题
江苏省南京市协同体七校2022-2023学年高一下学期期中联考数学试题(已下线)模块四 高一下期中重组篇(江苏)(已下线)专题4 考前优质试题精选练(4)(北师大版高一期中)广东省惠州大亚湾经济技术开发区第一中学2023-2024学年高二上学期第一次月考数学试题
名校
解题方法
5 . 在
中,
均为锐角.
(1)若
,求证:
是直角三角形;
(2)若
,求证:
是直角三角形;
(3)若
,那么
还一定是直角三角形吗?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adbbcd81fe3cadffa209c49edb55c424.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9ba45dae06449cb6c920ae62dfe981.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ed246ac62ff6267137ec814220d1fe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
名校
6 . 设函数
定义域为D,对于区间
,如果存在
,使得
,则称区间I为函数
的“P区间”.
(1)求证:
是函数
的“P区间”;
(2)判断
是否是函数
的“P区间”,并说明理由;
(3)设
为正实数,若
是函数
的“P区间”,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e31b14d5b4da0298a7dea660b03d1066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d71122e87403561adbcdac88945c481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2698a5500308daa68bc4c38d5caab41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03f0fadbe551b0e0eb7bf9440be740b9.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7a19bbab2270fc8e694527e801556cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6989274f11bf66835d5d4f82bce7f7.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65713c48e9847b892424ceee83b134f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/894b6be92b8cefcb58ab237211fef088.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
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7 . 在①
;②
这两个条件中任选一个,补充在下面问题中.
在
,角A,B,C的对边分别为a,b,c,且 .
(1)判断
的形状并给出证明;
(2)若
,求
的取值范围.
注:如果选择多个条件分别解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e02e6946143207c276f7430942c1b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd7ec9f2a433a1fe1975b221025a4be5.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2958030ec9d7543dda1f529593a915e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe05083b4f23c15bf5616abd4a43c57e.png)
注:如果选择多个条件分别解答,按第一个解答计分.
您最近一年使用:0次
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解题方法
8 . 十字测天仪广泛应用于欧洲中世纪晩期的航海领域,主要用于测量太阳等星体的方位,便于船员确定位置.如图1所示,十字测天仪由杆
和横档
构成,并且
是
的中点,横档与杆垂直并且可在杆上滑动.十字测天仪的使用方法如下:如图2,手持十字测天仪,使得眼睛可以从
点观察.滑动横档
使得
,
在同一水平面上,并且眼睛恰好能观察到太阳,此时视线恰好经过点
,
的影子恰好是
.然后,通过测量
的长度,可计算出视线和水平面的夹角
(称为太阳高度角),最后通过查阅地图来确定船员所在的位置.
(1)在某次测量中,
,横档的长度为20,求太阳高度角的正弦值.
(2)在杆
上有两点
,
满足
.当横档
的中点
位于
时,记太阳高度角为
,其中
,
都是锐角.证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5157b42da58d55daad27d98b2fec15ff.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/21/87bc1f52-dc65-41c7-b09b-64958227ba29.png?resizew=418)
(1)在某次测量中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af0e847821c95966efc534f26fbe4f6d.png)
(2)在杆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2059d1b10017e04aa35812c0354049b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e819b87f90651d89fcd258c276294e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed92b6907b518878f0fb5b00516f2985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943b765718479c160ba61ec5c6f8c5f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e29bf5652f0d4f764c3606efcdb445f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dadb2357b7a648d3a69c7a84dbdffcc0.png)
您最近一年使用:0次
2023-05-19更新
|
491次组卷
|
3卷引用:黑龙江省牡丹江市第一高级中学2022-2023学年高一下学期期中数学试题
名校
解题方法
9 . 已知梯形
中,
,
,
,E为
的中点,连接AE.
(1)若
,求证:B,F,D三点共线;
(2)求
与
所成角的余弦值;
(3)若P为以B为圆心、BA为半径的圆弧
(包含A,C)上的任意一点,当点
在圆弧
(包含A,C)上运动时,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f864244952b60f3648f08a19268efae9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9575824984c3e936744641879dc3edd4.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d021a5c98388463d577675e58068aa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4781e3daa2c4e018ca0ae09bb56abc0f.png)
(3)若P为以B为圆心、BA为半径的圆弧
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab7aaa871ceb78e5b80b531a7cf4f1c9.png)
您最近一年使用:0次
2023-03-26更新
|
996次组卷
|
4卷引用:江苏省无锡市江阴市两校联考2023-2024学年高一下学期4月期中考试数学试题
名校
解题方法
10 . 如图,四面体
中,
都是边长是1的正三角形,
分别是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/9/b57c2782-41cc-4287-8d3d-9dc2875bbcc1.png?resizew=150)
(1)求证:
平面
;
(2)当
变化时,求该四面体
表面积的最大值;
(3)当
变化时,求该四面体
体积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c96f3b6249dc94bb364fb0625d2b98e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94d9b22e5e13e0abb2532e56fca630d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e73caa6462cfa5dc60c2a245ca7dcb21.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/9/b57c2782-41cc-4287-8d3d-9dc2875bbcc1.png?resizew=150)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/810ee7bc82b6f452afb3fc18691abc3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6261790c66cc71ee3898afabad0c09f4.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次