解题方法
1 . 已知数列
满足
,且
.
(1)求
的值;
(2)若数列
为严格增数列,其中
是常数,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8b37711637950a0795efc5666a4f2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e35eeaabd951fb09b2926807da3685b.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc1faa80b58668e3a061c166fed8ab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
解题方法
2 . 2023年杭州亚运会首次启用机器狗搬运赛场上的运动装备. 如图所示,在某项运动赛事扇形场地
中,
,
米,点
是弧
的中点,
为线段
上一点(不与点
,
重合).为方便机器狗运输装备,现需在场地中铺设三条轨道
,
,
.记
,三条轨道的总长度为
米.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/9eb07001-5f34-48ab-b0c2-346e89c60147.png?resizew=148)
(1)将
表示成
的函数,并写出
的取值范围;
(2)当三条轨道的总长度最小时,求轨道
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f788fb0059b7356dc6c7811f46057e66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85f0a31ea2b1a279e1d50c3fba77d061.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ada3bf3a5bd0b858fea04c4d77a720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/9eb07001-5f34-48ab-b0c2-346e89c60147.png?resizew=148)
(1)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)当三条轨道的总长度最小时,求轨道
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
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2023-12-13更新
|
400次组卷
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2卷引用:上海市徐汇区2024届高三上学期一模数学试卷
解题方法
3 . 在
中,角
的对边分别为
.
(1)若
,求角
的大小;
(2)若
边上的高等于
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/696bf7c8ee1492b2ad2bb74d28ea8d49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/576833b76e9cad3b523f87132308df99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/101678e608c85bd89a7e0ae80d896646.png)
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解题方法
4 . 在中,角
,
,
所对的边分别为
,
,
,且满足
.
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6129fbf40a950fc8c516f0abaab21957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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5 . 已知数列
的通项公式为
,记
,若
,则正整数
的值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb7a970a0b96e1c945b3e1189a87c714.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f9c167dc2de7663c031fec059996f17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae6cfae0a5bdbe767111168e055280af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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名校
解题方法
6 . 某数学建模小组研究挡雨棚(图1),将它抽象为柱体(图2),底面
与
全等且所在平面平行,
与
各边表示挡雨棚支架,支架
、
、
垂直于平面
.雨滴下落方向与外墙(所在平面)所成角为
(即
),挡雨棚有效遮挡的区域为矩形
(
、
分别在
、
延长线上).
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/8b926056-0b86-4ce8-9ffa-f4024886010a.png?resizew=361)
(1)挡雨板(曲面
)的面积可以视为曲线段
与线段
长的乘积.已知
米,
米,
米,小组成员对曲线段
有两种假设,分别为:①其为直线段且
;②其为以
为圆心的圆弧.请分别计算这两种假设下挡雨板的面积(精确到0.1平方米);
(2)小组拟自制
部分的支架用于测试(图3),其中
米,
,
,其中
,求有效遮挡区域高
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56150248dd4b787a2013311e4737e93f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2558d8d867325a0460ec7f638d5dfd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cabc3303519ac16fc998913ad9f349c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/8b926056-0b86-4ce8-9ffa-f4024886010a.png?resizew=361)
(1)挡雨板(曲面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/196bd4d803ca8836b69fa54c6daf94c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a72cc14d6ce21597bb21db50bf705422.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f2a8d0c77c54fdf9aa97978f8e5dc0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(2)小组拟自制
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6fe0ece7af6e56ad40a25e8e1b8f97a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c4340dcffb0783d118a587e5352a2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30e586a8505faad251cc182676e0390.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2d256a64154ccaae236e5a8a1012eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
您最近一年使用:0次
2023-12-13更新
|
1131次组卷
|
6卷引用:上海市杨浦区2024届高三上学期模拟质量调研数学试题
上海市杨浦区2024届高三上学期模拟质量调研数学试题上海市七宝中学、松江一中、松江二中2024届高三上学期11月联考数学试题浙江省温州市第五十一中学2024届高三上学期期末数学试题(已下线)考点16 解三角形实际应用问题 --2024届高考数学考点总动员【练】(已下线)新题型01 新高考新结构二十一大考点汇总-3(已下线)6.4.3余弦定理、正弦定理(第4课时)
名校
7 . 等比数列
的首项
,公比为
,数列
满足
(
是正整数),若当且仅当
时,
的前
项和
取得最大值,则
取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa08a089a48737b6a0c47cd150b9f12a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31f36087983e31e24f5cbf1d4bea4795.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac3649308b528fd56545ba102dc42d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f5c583c98a1fd516c6ceaa60b55dec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-12-13更新
|
1095次组卷
|
11卷引用:上海市杨浦区2024届高三上学期模拟质量调研数学试题
上海市杨浦区2024届高三上学期模拟质量调研数学试题上海市青浦区朱家角中学2023-2024学年高二上学期期末考试数学试题(已下线)专题05 数列(四大类型题)15区新题速递(已下线)专题03 函数(三大类型题)15区新题速递(已下线)模块一 专题6 数列的通项公式与求和问题广东省珠海市第一中学2024届高三上学期大湾区期末数学预测卷(五)(已下线)第05讲:等差数列和等比数列(必刷12大考题+12大题型)-2023-2024学年高二数学上学期《考点·题型·难点》期末高效复习(人教A版2019)(已下线)专题09 数列的通项公式、数列求和及综合应用(9大核心考点)(讲义)(已下线)模块一专题3 数列的实际应用和综合问题【讲】高二下人教B版(已下线)模块一 专题4 数列的实际应用和综合问题【讲】高二下北师大版广东省广州市第二中学2023-2024学年高二下学期期中考试数学试题
名校
解题方法
8 . 等差数列
中,若
,
,则
的前10项和为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6243dd554deeb1e4af03b490ee806fae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3225abc65f060660b0a73add5693dfb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
2023-12-13更新
|
1290次组卷
|
7卷引用:上海市杨浦区2024届高三上学期模拟质量调研数学试题
上海市杨浦区2024届高三上学期模拟质量调研数学试题上海市复旦大学附属中学202-2024学年高二上学期期末考试数学试卷(已下线)专题05 数列(四大类型题)15区新题速递(已下线)模块一 专题5 等差数列与等比数列 期末终极研习室(2023-2024学年第一学期)高二人教A版(已下线)第05讲:等差数列和等比数列(必刷12大考题+12大题型)-2023-2024学年高二数学上学期《考点·题型·难点》期末高效复习(人教A版2019)(已下线)模块一 专题1 数列基础、等差数列和等比数列【讲】高二下人教B版(已下线)模块一 专题2 数列基础、等差数列和等比数列【讲】高二下北师大版
解题方法
9 . 在
中,角
、
、
所对边的边长分别为
、
、
,且
.
(1)若
,
,求
的值;
(2)若
为锐角三角形,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](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/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669ee3860bd1a0f038c6f845bc1c752a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60f4f8020bef636dcb3b8dc5fa2bdbb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb5bac75f36bb1dc5c8190d4dbe681d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32e2f2d7147cf1699fbfdef9cf4af74.png)
您最近一年使用:0次
名校
10 . 已知函数
.
(1)求
的单调递增区间;
(2)在
中,a,b,c为角A,B,C的对边,且满足
,且
,求角A的值,进而再求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e46691cebe8b2b6d672fe8a1e5cdffd2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8008fc63c06f9fa1f25a8df1a8352f63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc23eac3b58e300bda9b37f14c2f852b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2b9f4a56eddb8729daedaa14205852.png)
您最近一年使用:0次
2023-11-15更新
|
815次组卷
|
3卷引用:上海市嘉定区育才中学2024届高三下学期(3月份)一调数学试卷