名校
1 . 已知函数
.
(Ⅰ)讨论函数
的单调性;
(Ⅱ)证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fba4be3f799d0433d64a069937ac4b52.png)
(Ⅰ)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(Ⅱ)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/694ff691286161e389e3638e68dcd12c.png)
您最近一年使用:0次
2020-05-25更新
|
320次组卷
|
3卷引用:江苏省宿迁市沭阳如东中学2023-2024学年高二下学期阶段测试(三)数学试卷
2 . 已知函数
.
(1)求函数
的单调区间;
(2)当
时,证明:
在
上恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f16c135cafa7e226e56c4af90d842d2.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b4955c5adc717b7f6f0b975e0724ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
您最近一年使用:0次
解题方法
3 . 如图所示,直角梯形公园
中,
,
,
,公园的左下角阴影部分为以
为圆心,半径为
的
圆面的人工湖,现设计修建一条与圆相切的观光道路
(点
分别在
与
上),
为切点,设
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/755a866c-22f6-4a94-a861-26e527cf967d.png?resizew=143)
(1)试求观光道路
长度的最大值;
(2)公园计划在道路
的右侧种植草坪,试求草坪
的面积最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07ec792fca9dd6dce6078d2cecb223e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfbfc4fff61b0627ad494287a6abe456.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ab0bd573bfc57dd9444636a04b49a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3e4917c34a4c4e654ace35eb65f179b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0079690371546f2f85ba3efc605285a7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/755a866c-22f6-4a94-a861-26e527cf967d.png?resizew=143)
(1)试求观光道路
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)公园计划在道路
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.png)
您最近一年使用:0次
解题方法
4 . 如图,已知海岛
与海岸公路
的距离
为
,
,
间的距离为
,从
到
,需先乘船至海岸公路
上的登陆点
,船速为
,再乘汽车至
,车速为
,设
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/4ee461c5-aa2c-4289-b76a-b07aa62c08a9.png?resizew=151)
(1)用
表示从海岛
到
所用的时间
,并指明
的取值范围;
(2)登陆点
应选在何处,能使从
到
所用的时间最少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6162ce8297482d9ed897a15be5fa2ec4.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/a5abc4891decbeb113186c62edfe5f4f.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f2ef612f49f4765e46cd9bbb703a0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/084e821341ae449b597d5d09204d6120.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb689a793465929f004e561242fa993.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/4ee461c5-aa2c-4289-b76a-b07aa62c08a9.png?resizew=151)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.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/5224a7da7fe6bc28971ce4c277f88588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)登陆点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
名校
5 . 某景区为提高经济效益,现对某一景点进行改造升级,从而扩大内需,提高旅游增加值,经过市场调查,旅游增加值
万元与投入
万元之间满足:
,
为常数.当
万元时,
万元;当
万元时,
万元.
(1)求
的解析式;
(2)求该景点改造升级后旅游利润
的最大值.
(参考数据:
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15f406db7522799eb44e09433fdcebf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632fff87a2151140c50b1ce480479ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ff06692c025b869a7bcdcff15dca9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf2b56c9782cbb4f1e0bae581a1d899.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c4d28914a446c56b457d80ddf9b3d9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08e87b3d60719bf221b7a91446411f22.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求该景点改造升级后旅游利润
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe70239f939f8b8630f8df31ed206852.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c8f8d3d05cc8ec8771e19c950b503f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56cd9fd1bf71d7bb19b29d9d326b73a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11070394a6405a0d5c0ff585f72fb810.png)
您最近一年使用:0次
2020-04-11更新
|
504次组卷
|
4卷引用:江苏省宿迁市沭阳县如东中学2020-2021学年高三上学期第一次月考数学试题
名校
解题方法
6 . 某汽车生产企业上年度生产一品牌汽车的投入成本为10万元/辆,出厂价为14万元/辆,年销售量为
辆.本年度为适应市场需求,计划提高产品档次,适当增加投入成本,若每辆车投入成本增加的比例为
(0<
<1),则出厂价相应提高的比例为0.6
,年销售量也相应增加.已知年利润=(每辆车的出厂价-每辆车的投入成本)×年销售量.
(1)若年销售量增加的比例为0.5
,为使本年度的年利润比上年度有所增加,则投入成本增加的比例
应在什么范围内?
(2)若年销售量关于
的函数为
为常数),则当
为何值时,本年度的年利润最大?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d47b195803959509b25d8e415b4ce563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)若年销售量增加的比例为0.5
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若年销售量关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7e9335d3c50ead51a3bea04324ffe2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
名校
7 . 已知函数
.
(1)当
时,讨论
的单调性;
(2)证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cba5c494d16b48dc23d70f88311e1f02.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3a34d6f60032718820c3da2b07786b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655b06387179d53c1e474fcfcb408b1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e97fe6b85433dc7d61a7b43bb7c3fee.png)
您最近一年使用:0次
2020-03-16更新
|
351次组卷
|
3卷引用:江苏省宿迁市泗阳县众兴中学2020-2021学年高二下学期4月月考数学试题
名校
8 . 如图,某湿地公园的鸟瞰图是一个直角梯形,其中:
,
,
,
长1千米,
长
千米,公园内有一个形状是扇形的天然湖泊
,扇形
以
长为半径,弧
为湖岸,其余部分为滩地,B,D点是公园的进出口.公园管理方计划在进出口之间建造一条观光步行道:线段
线段
弧
,其中Q在线段
上(异于线段端点),
与弧
相切于P点(异于弧端点]根据市场行情
,
段的建造费用是每千米10万元,湖岸段弧
的建造费用是每千米
万元(步行道的宽度不计),设
为
弧度观光步行道的建造费用为
万元.
![](https://img.xkw.com/dksih/QBM/2020/2/26/2407391716786176/2409415550607360/STEM/7c677e0a6a5a47488812d448b51a9677.png?resizew=197)
(1)求步行道的建造费用
关于
的函数关系式,并求其走义域;
(2)当
为何值时,步行道的建造费用最低?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37591109b0a0ec5ffe2133f83310eca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96ad9708fb35359a8c151703432df5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f332555e65843f32f4c623098c6adc72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f332555e65843f32f4c623098c6adc72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4f74fb8a56cee4af845409e85e76834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fca4d64c9406e52e3ce4e35044c3ae10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f6927cc2a930203ac34366383e76ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66780d058323c16b47ddcc117d8b3980.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e2c17d4d575f9c14180c5648b0d6dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/595044a7750ab4f84519041979c3d780.png)
![](https://img.xkw.com/dksih/QBM/2020/2/26/2407391716786176/2409415550607360/STEM/7c677e0a6a5a47488812d448b51a9677.png?resizew=197)
(1)求步行道的建造费用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/595044a7750ab4f84519041979c3d780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
您最近一年使用:0次
2020-02-29更新
|
343次组卷
|
5卷引用:江苏省宿迁市沭阳如东中学2019-2020学年高三上学期1月阶段考试数学试题
名校
9 . 某种圆柱形的如罐的容积为
个立方单位,当它的底面半径和高的比值为______ .时,可使得所用材料最省.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45fa93a019b854f078700ffe541d40e2.png)
您最近一年使用:0次
2020-02-29更新
|
416次组卷
|
3卷引用:江苏省宿迁市沭阳如东中学2019-2020学年高三上学期1月阶段考试数学试题
名校
10 . 若函数
与
满足:存在实数
,使得
,则称函数
为
的“友导”函数.已知函数
为函数
的“友导”函数,则
的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d37090112aa052a7eaa19ac2e5a4809b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1f3055e2e6d3aa90d2f770019f8399.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b3705bb5874ee063ae21e56895c802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-01-08更新
|
382次组卷
|
5卷引用:江苏省宿迁市沭阳县修远中学2020-2021学年高二下学期第一次联考数学试题