名校
解题方法
1 . 数列
中,从第二项起,每一项与其前一项的差组成的数列
称为
的一阶差数列,记为
,依此类推,
的一阶差数列称为
的二阶差数列,记为
,….如果一个数列
的p阶差数列
是等比数列,则称数列
为p阶等比数列
.
(1)已知数列
满足
,
.
(ⅰ)求
,
,
;
(ⅱ)证明:
是一阶等比数列;
(2)已知数列
为二阶等比数列,其前5项分别为
,求
及满足
为整数的所有n值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d82c65a855b1eed9c43e6829f6c3bffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c599a8303d934678c8cae0ed864b776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c599a8303d934678c8cae0ed864b776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5452a758da0f722da03128a5eb3ea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f88267cbc5e8e016b1a92bcf0fb27d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281cde49dcc279bdc6b2a99edafe19da.png)
(1)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3998df04d0a8ded946c3f39d545fdc7e.png)
(ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9f94c7bb2d2afc4196b15f6879ddf86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e9e4a01bdaa1f768225e055b6c6d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13df1f8f074ab49fc065ed0da2d5aff.png)
(ⅱ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0965cc6a58c25d9ba7876da319a8cae9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
您最近一年使用:0次
2024-05-07更新
|
960次组卷
|
4卷引用:北京市中国人民大学附属中学2023-2024学年高二下学期统练3数学试题
北京市中国人民大学附属中学2023-2024学年高二下学期统练3数学试题2024届山东省潍坊市二模数学试题吉林市第一中学2024届高三高考适应性训练(二)数学试题(已下线)专题04 高二下期末考前必刷卷02(提高卷)--高二期末考点大串讲(人教A版2019)
名校
2 . 2024年2月4日,“龙行中华——甲辰龙年生肖文物大联展”在山东孔子博物馆举行,展览的多件文物都有“龙”的元素或图案.出土于鲁国故城遗址的“出廓双龙勾玉纹黄玉璜”(图1)就是这样一件珍宝.玉璜璜身满刻勾云纹,体扁平,呈扇面状,璜身外镂空雕饰“S”型双龙,造型精美.现要计算璜身面积(厚度忽略不计),测得各项数据(图2):
cm,
cm,
cm,若
,
,则璜身(即曲边四边形ABCD)面积近似为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07ba73a9568691f79a654b80fa30012b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21addc919c14c98fdd0dc94be059f34f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3df3c1d034440240e3d4d73615b091f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e517611970f373a84c470b7365bdb42f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d553e4a26eb3012410ef7558a5fd6d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-03-15更新
|
1506次组卷
|
6卷引用:北京市海淀区中央民族大学附属中学2023-2024学年高一下学期期中练习数学试卷
名校
3 . 共享单车已经逐渐成为人们在日常生活中必不可少的交通工具.通过调查发现人们在单车选择时,可以使用“
竞争函数”进行近似估计,其解析式为
(其中参数a表示市场外部性强度,a越大表示外部性越强).给出下列四个结论:
①
过定点
;
②
在
上单调递增;
③
关于
对称;
④取定x,外部性强度a越大,
越小.
其中所有正确结论的序号是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be5897a73368419a2e6d54bd5b49e83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5926523d3dfe59ebd72445b054e383f2.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/782e6aab135b30eed10b49df5a91988d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a982c17d1a94a9bd81dc27cad133b74.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/782e6aab135b30eed10b49df5a91988d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304226ca50149b49702928e44d565964.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/782e6aab135b30eed10b49df5a91988d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b650820d7bed48ed67a2869ad8c65ff1.png)
④取定x,外部性强度a越大,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/782e6aab135b30eed10b49df5a91988d.png)
其中所有正确结论的序号是
您最近一年使用:0次
2024-02-10更新
|
431次组卷
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3卷引用:北京市海淀区2023-2024学年高一上学期期末考试数学试题
4 . 对于给定的奇数
,设
是由
个实数组成的
行
列的数表,且
中所有数不全相同,
中第
行第
列的数
,记
为
的第
行各数之和,
为
的第
列各数之和,其中
.记
.设集合
或
,记
为集合
所含元素的个数.
(1)对以下两个数表
,
,写出
,
,
,
的值;
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/2/e69407e7-892f-4a4f-952f-72fcf655e5f4.png?resizew=138)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/2/c396e40f-d96e-4dad-b60b-54bbd480977d.png?resizew=138)
(2)若
中恰有
个正数,
中恰有
个正数.求证:
;
(3)当
时,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84de01db26d435ab45acdf26cfefe625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/823b5260d6b24cc69747c0455c879b7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267e1fe5e16e9dc9641c7736528e1235.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/449fa836b7477adb5c394b8e67af6a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02eca2f89985a104ddeebdf89629ade7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f76063c9d41d3398308bf7d25938d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9164331fb78ebe6059e69060f3ab302a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d418009b040d5e5192d28417b459890.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e75ee8469247f599502aec2f2ee552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b811354062228d1e2e090aa587259c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
(1)对以下两个数表
![](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/c9d98b87ea379019dea6dbd58ebaf19f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebed69dd5f3ef7ff5eccd8031e4771ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc8b030e661224065ec16aa272782b44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a135dc0cf986199b13a3ce1106379e16.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/2/e69407e7-892f-4a4f-952f-72fcf655e5f4.png?resizew=138)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/2/c396e40f-d96e-4dad-b60b-54bbd480977d.png?resizew=138)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de7bdfbb18abcc2d1575d1228489f56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93f4518b3c93a17e13fc06affa23e519.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31eb153a2133b41486193e3c3b633d3c.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7a1d739890a8951586e23b78b035bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8181afecca9a1adc761a2184543fd2e5.png)
您最近一年使用:0次
名校
解题方法
5 . 已知
为有穷正整数数列,且
,集合
.若存在
,使得
,则称
为
可表数,称集合
为
可表集.
(1)若
,判定31,1024是否为
可表数,并说明理由;
(2)若
,证明:
;
(3)设
,若
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67905ad53186bb2908b603bc14005d10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/702dcfe2523f774f6bc4f075f3d24fe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80566aaf96db9c785cda10dc0935c1c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84076d0854ef7c1a99a937fd50b25843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c6985405452b5d04bd0d3305544cc2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c93e3391890fc877c761121b68cb927.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54119668d2f6cbc9ce0cb92310037713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c93e3391890fc877c761121b68cb927.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b83efe191fb8adaf89737c03ef34d1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c93e3391890fc877c761121b68cb927.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2ebfe653088b1a534d0731947db43d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/562441c2767a65f3671afa93b190126b.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffceb52b543819898a9a6fc96d7337e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7eab142f716f69be57d3f4ca2197894.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2024-01-20更新
|
1474次组卷
|
7卷引用:北京市海淀区北京一零一中2023-2024学年高三下学期统考四(开学考)数学试题
名校
6 . 蜜蜂被誉为“天才的建筑师”.蜂巢结构是一种在一定条件下建筑用材面积最小的结构.如图是一个蜂房的立体模型,底面
是正六边形,棱
,
,
,
,
,
均垂直于底面
,上顶由三个全等的菱形
,
,
构成.设
,
,则上顶的面积为( )
(参考数据:
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdae78f4d3b8d8213ac3ac9a9567eb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c845bb8ceaa4caef3af4f1e4366b49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d889d78679f6ba91520be5aa756d6154.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f64c372f6162c32675bfc005cffa6956.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eacc87d259ff84622e7f676597b69fb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eb9353188d96ed07abe583688d342c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3598e6d5201429585c667718edd09fac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ae2d1a04fd6db3d79dc54cc02cea80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/989224138e88666c99046749417785e1.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41c556a37cff94e67dbd1aa9abc3897e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e17bacf1fa489ece9034bdbbeeee2e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-01-18更新
|
593次组卷
|
3卷引用:北京市海淀区2024届高三上学期期末练习数学试题
7 . 甲、乙、丙三人进行投篮比赛,共比赛10场,规定每场比赛分数最高者获胜,三人得分(单位:分)情况统计如下:
(1)从上述10场比赛中随机选择一场,求甲获胜的概率;
(2)在上述10场比赛中,从甲得分不低于10分的场次中随机选择两场,设
表示乙得分大于丙得分的场数,求
的分布列和数学期望
;
(3)假设每场比赛获胜者唯一,且各场相互独立,用上述10场比赛中每人获胜的频率估计其获胜的概率.甲、乙、丙三人接下来又将进行6场投篮比赛,设
为甲获胜的场数,
为乙获胜的场数,
为丙获胜的场数,写出方差
,
,
的大小关系.
场次 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
甲 | 8 | 10 | 10 | 7 | 12 | 8 | 8 | 10 | 10 | 13 |
乙 | 9 | 13 | 8 | 12 | 14 | 11 | 7 | 9 | 12 | 10 |
丙 | 12 | 11 | 9 | 11 | 11 | 9 | 9 | 8 | 9 | 11 |
(2)在上述10场比赛中,从甲得分不低于10分的场次中随机选择两场,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf3baba074e8aeb6f3ea117865bbd1b.png)
(3)假设每场比赛获胜者唯一,且各场相互独立,用上述10场比赛中每人获胜的频率估计其获胜的概率.甲、乙、丙三人接下来又将进行6场投篮比赛,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/351bb3f3c54604330fa5b6c2bc3a7502.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177b7f56650f15cdcabd287ee39554d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a9b86a58f9b76942e92c895ed75352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13fcd9186c8631f6d52e851dec63b3cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dd6627250fa8af2c12597c89c2bca24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae4126819f53a33553f9dde919c46dba.png)
您最近一年使用:0次
2024-01-18更新
|
968次组卷
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7卷引用:北京市海淀区2024届高三上学期期末练习数学试题
北京市海淀区2024届高三上学期期末练习数学试题(已下线)高三数学开学摸底考 (北京专用)(已下线)第七章 随机变量及其分布(知识归纳+题型突破)-2023-2024学年高二数学单元速记·巧练(人教A版2019选择性必修第三册)(已下线)专题21 概率与统计的综合运用(13大核心考点)(讲义)(已下线)第07讲 7.4.2超几何分布-【帮课堂】2023-2024学年高二数学同步学与练(人教A版2019选择性必修第三册)(已下线)7.4.2 超几何分布——课后作业(提升版)(已下线)2024年北京高考数学真题变式题16-21
名校
解题方法
8 . 已知函数
.
(1)当
时,求证:
①当
时,
;
②函数
有唯一极值点;
(2)若曲线
与曲线
在某公共点处的切线重合,则称该切线为
和
的“优切线”.若曲线
与曲线
存在两条互相垂直的“优切线”,求
,
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea7f41aa561904f6f2a8e6aaae348855.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f42342632cbd8e9cfbae17b76d94b033.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9e5ea144897b9b7db92726da39648f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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2024-01-18更新
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2卷引用:北京市海淀区2024届高三上学期期末练习数学试题
名校
9 . 已知函数
的定义域均为
,给出下面两个定义:
①若存在唯一的
,使得
,则称
与
关于
唯一交换;
②若对任意的
,均有
,则称
与
关于
任意交换.
(1)请判断函数
与
关于
是唯一交换还是任意交换,并说明理由;
(2)设
,若存在函数
,使得
与
关于
任意交换,求b的值;
(3)在(2)的条件下,若
与
关于
唯一交换,求a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc4978f812146b4566467ee255fc1c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
①若存在唯一的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c21349867ead1c5d88dc7a618e073dfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
②若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c21349867ead1c5d88dc7a618e073dfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)请判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0ba94c781da05ac6ca38261904b40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c89a5f35cd4e4764d285fce93350443b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318a16f1950d06e5500c76d8f81a507f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b0e163359b6ed8f05a408790e719fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b8b2248e52559f7d86566313a7c1040.png)
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5卷引用:北京市海淀区2023-2024学年高一上学期期末考试数学试题
名校
10 . 已知函数
.请从条件①、条件②这两个条件中选择一个作为已知,解答下面的问题.
条件①:
;
条件②:
.
注:如果选择条件①和条件②分别解答,按第一个解答记分.
(1)求实数k的值;
(2)设函数
,判断函数
在区间
上的单调性,并给出证明;
(3)设函数
,指出函数
在区间
上的零点个数,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f7d13f97baaeb36f1785d09d389f0c.png)
条件①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a38b1e7496745c92fabb36b1c5d6f16.png)
条件②:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b3d8321b8a85830c2af2ead9f36867.png)
注:如果选择条件①和条件②分别解答,按第一个解答记分.
(1)求实数k的值;
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38d825ec419a668aa8efb06d43d3c2a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c388166862b3ccfcc7ca749ebe5949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1242ec96ac54e2fd418988d5190a88.png)
(3)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92f4afb555297200a8cbc59a428ed8dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6554ac3dff4a59833e407db887f6e6.png)
您最近一年使用:0次
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5卷引用:北京市海淀区2023-2024学年高一上学期期末考试数学试题