题目
题型:不详难度:来源:
已知函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215140-28550.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215140-60164.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215141-10648.png)
(1)若函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215141-72662.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215141-72662.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215141-46426.png)
(2)用函数的单调性的定义证明:当
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215141-69946.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215141-72662.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215141-95260.png)
(3)当
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215142-38842.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215141-72662.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215142-56046.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215142-14444.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215141-72662.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215141-46426.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215142-29319.png)
(2)设任意
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215142-12264.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215143-50046.png)
(3)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215143-34569.png)
解析
试题分析:解:(1)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215143-39379.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215141-72662.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215143-25969.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215143-76971.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215144-37145.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215144-33457.png)
即函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215141-72662.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215144-87977.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215144-95437.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215145-10412.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215145-99294.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215145-33403.png)
又
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215145-22726.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215145-42327.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215141-72662.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215141-46426.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215142-29319.png)
(2)设任意
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215142-12264.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215143-50046.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215146-77447.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215146-27401.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215146-66891.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215146-76912.png)
又
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215146-83740.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215147-85441.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215145-42327.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215141-69946.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215141-72662.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215141-95260.png)
(3)对于
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215142-38842.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215141-72662.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215142-56046.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215147-37076.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215147-84388.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215142-38842.png)
即
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215147-58103.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215142-38842.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215147-73503.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215147-54335.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215145-42327.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215142-14444.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215143-34569.png)
点评:解决的关键是根据二次函数的性质来求解证明,属于基础题。。
核心考点
试题【(本小题满分14分)已知函数,,其中.(1)若函数是偶函数,求函数在区间上的最小值;(2)用函数的单调性的定义证明:当时,在区间上为减函数;(3)当,函数的图象】;主要考察你对函数的相关概念等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215122-18876.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215123-33715.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215123-90236.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215123-29692.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215123-65825.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215124-65731.png)
A.![]() | B.![]() | C.![]() | D.![]() |
设函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215051-11435.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215051-31971.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215051-37297.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215052-28644.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215052-66060.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215051-31971.png)
(2)证明:曲线
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215051-31971.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215052-52816.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215052-33266.png)
(3) 将函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215051-31971.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215053-80014.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215053-18494.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215023-29882.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215023-35871.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
已知函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215014-62182.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215015-72730.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215015-61413.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215015-22790.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215015-72730.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215015-38628.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215015-84089.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204215016-11904.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204214934-76418.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204214934-72388.png)
①
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204214934-28569.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204214934-54343.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204214935-50840.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204214935-15881.png)
③
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204214934-28569.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204214935-66451.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204214935-38432.png)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204214936-94240.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204214936-69541.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204214936-83351.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204214936-94722.png)
最新试题
- 1Not a single word _____ when _____ about his late mother.A.
- 2计算:ab•ca=______.
- 3Remember that customers don’t__about prices in that city.A.d
- 4—Let’s read the report on India’s population in the newspape
- 5实验室中常用铵盐与强碱反应制取氨气(NH3),下列关于氨气的说法中不正确的是( )A.密度比空气密度小B.具有刺激性气
- 6There is ____"h" and _____"u" in the word "hurry". [
- 7小红做一道数学题“两个多项式A、B,B为4x2﹣5x﹣6,试求A+2B的值”.小红误将A+2B看成A﹣2B,结果答案(计
- 8下列各组离子中,在溶液中能大量共存,加入氢氧化钠溶液有沉淀析出,加入稀盐酸有气体放出的是A.Na+、Ca2+、SO42—
- 9下列溶液中有关物质的量浓度关系和计算不正确的是 [ ]A.pH相等的NaOH、CH3COONa和NaHCO3三
- 10学校举办“名著新读 角色体验”主题系列活动。其中一项活动是将名著的某一情节改编成剧本。请你从下面所给名著中任选一部,写出
热门考点
- 1(2x-3)(3x+2)
- 2汽船以10米/秒速度横渡河流,河对面有座山,船鸣笛后5秒钟驾驶员听到回声,求鸣笛时,船离山多远?(v声=340米/秒)
- 3有学者指出,古代小农的供给行为具有双重性,即在满足自己家庭消费的同时,又积极向市场提供剩余农产品和主动以市场为导向安排生
- 4某程序框图如图所示,该程序框图的功能是 ( )A.求输出a,b,c三数的最大数B.求输出a,b,c三数的最小数C.
- 5化学反应在生成新物质的同时,还伴随着________,而能量的变化通常表现为________。有的化学反应会放出热量,如
- 6化简:=_________.
- 7【题文】读下图,回答问题。(9分)(1)A、B两点的地理坐标为:A
- 8“量小失众友,度大集群朋。”这句俗语启示我们要( )A.自立自强B.宽容友善C.换位思考D.诚实守信
- 9完形填空。 Some people say they have an answer to the problem
- 10献礼国庆六十周年的《建国大业》等一大批弘扬主旋律的影视剧作品,不仅在艺术上展现出颇高的成就,而且在文化的产业化发展道路上