解题方法
1 . 已知函数
是
上的奇函数(
为常数),
,
.
(1)求实数
的值;
(2)若对任意
,总存在
,使得
成立,求实数
的取值范围;
(3)若不等式
成立,求证实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef48d0c7d50bb70abaf92e31ecc33c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a82f36ccbc2c7b8d9bd3aeb7a4cdf123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66b3a5b4f2b7279a7aa94f8ec12b3f43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3afa9b6f5e9873bb4aa72b6473d3f33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e63bbadc6250f7139836ede33205550.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e9f77f71250d5442c74ab2a2778a14f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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名校
2 . 已知函数
,且
,
,若存在
,使得对任意
,
恒成立,则
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9562d9cd7a02b2ae5b6f4644980578b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/791003f29514d2fde7a85623f70804ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0949362b5747cf4c328bdbad12649f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92988c0e2f6acc21ea4bbfa4718ee3ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5ea74a92125c2bf0599963d5b3bcb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3c034d3e34dade844d6cb06582ee931.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2019-01-01更新
|
502次组卷
|
4卷引用:江苏省宿豫中学2018-2019学年高二上学期期末模拟数学试题
解题方法
3 . 某中学课外活动小组开展劳动实习,活动中需制造一个零件模型,该零件模型为四面体,设为
,要求
,当
时,此四面体体积的最大值为______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a3bea3a167edaca9a5772fe5adb0e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce45363698ecc7a27d8d2aa197962b0.png)
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4 . 设函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/081760dd4b5a28366ad09f6419956e5d.png)
,
.
(1)当
时,求曲线
在
处的切线方程;
(2)求函数
在
上的最小值(
为自然对数的底数);
(3)是否存在实数
,使得
对任意正实数
均成立?若存在,求出所有满足条件的实数
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/081760dd4b5a28366ad09f6419956e5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c235ca725ade5c8b07943ac106a90fb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846d849137831cf93bdf9cc72d4bf6a8.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579e2c39e6c0a640357e3b0ccd6f954a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(3)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447d6f62c09c1d05346fd16a24159f6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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5 . 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)
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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
6 . 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)
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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
7 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7050ce518174b0820bf1d183d4d985.png)
(Ⅰ)求曲线
在
处的切线方程;
(Ⅱ)当
时,求
的零点个数;
(Ⅲ)若函数
在
上是增函数,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7050ce518174b0820bf1d183d4d985.png)
(Ⅰ)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb40a36a293471742ce75f6b9635b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅲ)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14f7498afc14e38f0b8d7bf1ce3b257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeb49dbba01c4ff5f686ffc8828351b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22a4d023692619c0ff3e6c1f6257bac4.png)
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2018-11-26更新
|
594次组卷
|
2卷引用:2020届江苏省宿迁中学高三上学期1月一模全真模拟卷数学试题
名校
8 . 某商场为了获得更大的利润,每年要投入一定的资金用于广告促销.经调查,每年投入广告费
(百万元),可增加的销售额为
(百万元)
.
(1)若该商场将当年的广告费控制在三百万元以内,则应投入多少广告费,才能使公司由广告费而产生的收益最大?(注:收益=销售额-投入费用)
(2)现在该商场准备投入三百万元,分别用于广告促销和技术改造.经预算,每投入技术改造费
(百万元),可增加的销售额约为
(百万元),请设计一个资金分配方案,使该商场由这两项共同产生的收益最大.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4855a61500a8d7fa4eaf2353a44ea337.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9ddf42e68ac087377c3fe6a3f70cbd8.png)
(1)若该商场将当年的广告费控制在三百万元以内,则应投入多少广告费,才能使公司由广告费而产生的收益最大?(注:收益=销售额-投入费用)
(2)现在该商场准备投入三百万元,分别用于广告促销和技术改造.经预算,每投入技术改造费
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07e73721185abd5511352b172dd51c0a.png)
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2017-05-21更新
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948次组卷
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11卷引用:江苏省宿迁市沭阳县潼阳中学2020-2021学年高二下学期第一次月考数学试题
江苏省宿迁市沭阳县潼阳中学2020-2021学年高二下学期第一次月考数学试题江苏省张家港高级中学2016-2017学年高二下学期期中考试数学(文)试题湖北省鄂东南省级示范高中教育教学改革联盟校2017-2018学年高二下学期期中考试数学(理)试题广东省江门市第二中学2018-2019学年高二下学期第一次月考数学(理)试题(已下线)第01章 导数(A卷基础篇)-2020-2021学年高二数学下学期同步单元AB卷(苏教版)(已下线)1.4 生活中的优化问题举例-2020-2021学年高二数学(理)课时同步练(人教A版选修2-2)(已下线)专题七 利用导数解决实际问题-2020-2021学年高中数学专题题型精讲精练(2019人教B版选择性必修第三册)(已下线)第5章 导数及其应用(A卷·夯实基础)-2021-2022学年高二数学同步单元AB卷(苏教版2019选择性必修第一册)【学科网名师堂】(已下线)第12节 导数的综合应用江西省抚州市金溪县第一中学2021-2022学年高二下学期第一次月考数学(理)试题山东省实验中学2023-2024学年高二下学期4月月考数学试题
名校
9 . 已知函数
.
(1)求曲线
在
处的切线方程.
(2)若不等式
对任意
恒成立,求k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/503254515608ea694d83059d4385cd60.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3a09d9551caddadb1f5e15f801556bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e96a6b630cbc1b8ac993beb5a1fab1b.png)
您最近一年使用:0次
2021-04-03更新
|
197次组卷
|
2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
解题方法
10 . 已知函数
.
(1)求函数
的最大值;
(2)若对于任意
,均有
,求正实数
的取值范围;
(3)是否存在实数
,使得不等式
对于任意
恒成立?若存在,求出
的取值范围;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2d53e84446ab2d482dd8cdfeb27b402.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb2a4f807970465a0c72a795a4cbbee7.png)
(2)若对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4df3c6bcf07d206ffeac54b029cf2be6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/012cb2889a79722cb1de3787c9d76329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdf69eb7e64c199a36bcb05cb41d3746.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次