解题方法
1 . 设Sn是数列
的前n项和,定义等斜率数列
且
等式
恒成立.
(1)若
是首项为1,公比为3的等比数列,请判断
是否为等斜率数列,并说明理由;
(2)已知
是等斜率数列,证明:
是等差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f0e0373a4e95709a67c312cdc054466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d48bb696708fd77448c1427b6e769fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d0c1a0bddea64281c61f2851b37634.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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名校
2 . 在
中,内角
,
,
的对边分别为
,
,
,且
.
;
(2)如图1,
,
,求
;
(3)如图2,若
,
,在边
,
上分别取点
,
,将
沿直线
折叠,使顶点
正好落在边
上的
点处,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.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/6a4ad05db43e70b334844d5649539206.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9999a4de597c8566007c1ed305c2d52c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/286a58a9ce6693c74143bf6f29597119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
(3)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10a0e87bca5763555442ee85cc663bd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3144c5c1990887702f97d05ebb7f607d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1c8029d595ad6792877ce32532869e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
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3 . 已知正实数
,
满足
,则
的最大值为( )
![](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/272623df91554c2ebbf61f363eaaa673.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd431067392a8350a0eb827dba39a31e.png)
A.0 | B.![]() | C.1 | D.![]() |
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3卷引用:河南省漯河市高级中学2024届高三下学期5月月考数学试题
名校
4 . 如图,已知矩形ABCD的边
,
.点P,Q分别在边BC,CD上,且
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9a2441279907a130e42dec796f5fa63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc5604d3e156df3e7ccca0ccec9c9d45.png)
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3卷引用:专题01 第六章 平面向量-期末考点大串讲(人教A版2019必修第二册)
(已下线)专题01 第六章 平面向量-期末考点大串讲(人教A版2019必修第二册)河南省郑州市宇华实验学校2023-2024学年高二下学期5月月考数学试题江苏省南京市金陵中学2023-2024学年高二下学期4月期中测试数学试题
解题方法
5 . 记
为数列
的前
项和,
为数列
的前
项积,
,已知
,且
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211e91c109e0b3c53886485f9701e504.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/988de1035a81e488e2df8a8e25543a89.png)
A.数列![]() | B.![]() | C.![]() | D.当![]() ![]() |
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2024-04-28更新
|
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5卷引用:河南省青桐鸣联考2023-2024学年高二下学期3月月考数学试题
河南省青桐鸣联考2023-2024学年高二下学期3月月考数学试题河南省青桐鸣联考2023-2024学年高二下学期3月月考数学试题(北师大版)(已下线)第19题 递推数列求通项,模型思想是主线(优质好题一题多解)(已下线)北师大版本模块五 专题3 全真能力模拟3(高二期中)(已下线)模块五 专题6 全真拔高模拟6(人教B版高二期中研习)
解题方法
6 . 若数列
的项
的最大奇因数为
,则
叫做
的“滤净数列”.已知数列
满足
是
的滤净数列.
(1)求
的通项公式及
的值;
(2)若
,求
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/621604766ddd141c86e37da5e71aef26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a0c8aadb625077291084aa12f84c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1584461988bf6fbfef8be64226255c3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88252e8d8eb03422273cea5067de02bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed900c88cf1ca707255cd73398f6321.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3076ec6b824db9b9b8b2857219eee0e9.png)
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|
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3卷引用:河南省青桐鸣联考2023-2024学年高二下学期3月月考数学试题
名校
7 . 某公园计划改造一块四边形区域
铺设草坪,其中
百米,
百米,
,草坪内需要规划4条人行道
以及两条排水沟
、
,其中
分别为边
的中点.
,求
的余弦值;
(2)若
,求排水沟
的长;
(3)若
,试用
表示4条人行道的总长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0904a16358aab37c4042f40386d9d2d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2804e5b8e43f5c4622b96cc6dba646a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/214ba5ccd88a4f80292b4db8f81ade28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7db164a3e15489a0de6ac0203e2cba7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c4340dcffb0783d118a587e5352a2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727ad3e630a224303d6d3b8ad5c114ba.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c4340dcffb0783d118a587e5352a2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/597ce705d3a2fe04d29de9e81ec6250d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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解题方法
8 . 如图,在面积为
的
中,M,N分别为
,
的中点,点P在
上,若
,则
的最小值是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ff8c8d239cc12ddc3a899e9f054aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa29fe6cd9eb51c184f6299d437375cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85e50638d41cbdc64868f461b7bd3df6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41c1ade5e8de470776288e5031ebc42.png)
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3卷引用:河南省河南名校联考2023-2024学年高一下学期4月月考数学试题
河南省河南名校联考2023-2024学年高一下学期4月月考数学试题第二章 平面向量及其应用章末重点题型复习(1)-同步精品课堂(北师大版2019必修第二册)(已下线)【讲】 专题二 与平面给向量数量积有关的范围与最值问题(压轴大全)
9 . 若
表示自然数
的最大奇因数,例如
,
,
,记
(
为自然数),则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72253d846d8750db2bf695df99c53f3e.png)
______ .,
的通项公式为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91eb1a74ed4eb789a5cf6bf0d08900a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30ac85888a9b802aea6eb688edac8f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18443df3018a6806c7ded2bf11ed70a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9bf2837ae4419c83bb69ad10ab7ef14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/640faa4d58105334dafd1cf218f30ae9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72253d846d8750db2bf695df99c53f3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fcec7af3520884b173b29bda6c657a.png)
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10 . 郑州市中原福塔的塔座为鼎,寓意为鼎立中原,从上空俯瞰如一朵盛开的梅花,寓意花开五福,福泽中原,它是美学与建筑的完美融合.绿地中心千玺广场“大玉米”号称中原第一高楼,璀璨繁华的外表下包含浓郁的易学设计理念,流露出馥郁的古香.这两座塔都彰显了中华文化丰富的内涵与深厚的底蕴.小米同学积极开展数学研究性学习,用以下方法测量两座塔的高度.
(1)为测量中原福塔高度,小米选择视野开阔的航海东路上一条水平基线
,使
共线,在
三点用测角仪测得
的仰角分别为
,其中测角仪的高度为
米,为了测量距离,小米骑共享单车,速度为
,从
到
耗时
,从
到
耗时为原来的
倍,求塔高
.(参考数据:取
,
)
,使
三点共线,在
两点用测角仪测得
的仰角分别为
,
,在
处测得
的仰角为
,测角仪高度忽略不计.小米使用智能手机运动测距功能,从河南艺术中心音乐厅入口台阶
处运动到水景露天剧场的
处,测得距离
.
,
,
,
表示塔高
;
②若
,
,
,
米,求千玺广场“大玉米”的实际高度.
(参考数据:取
,
,
)
(1)为测量中原福塔高度,小米选择视野开阔的航海东路上一条水平基线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df2c4f20594ab1443c0d8dcce42895f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df2c4f20594ab1443c0d8dcce42895f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8e3f533b62be4d6f17e949d924f03b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03f9efdececbe3290745c961cf2988c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/049462dc17c95fc83c3a362f09cd0688.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45035c785ad41695590eff5a9a6c0e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8020712f738b1059cefe3e64becf08b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67802092c4c9f3b1cff1f9502b7d1ded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f804d01672d4e1d904368979c3567d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.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/5b5858ee1ce52b251816757257a11c29.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/7053dbf019e52fe3791d764ba6d96b42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d58f9019097bd05037aefd5c322916.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3210a2f2bfd010609600bca988f55304.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600e64cb886417562657da9966a2fac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8dc311b022e50c061cf97195f6706a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6166a4bb8ec20c446499134afb7aa3e8.png)
(参考数据:取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2bd823b33b52e016e14da84ca1f4df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac96391cc3bb0e390b1fa563f00deaeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f303268ffe2bc132e52c0fb221c9d373.png)
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