题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042920-20346.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042920-99075.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042920-16881.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042920-19067.png)
(1)若对任意的
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042921-33329.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042921-33607.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042921-20127.png)
(2)若函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042920-16881.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042921-60797.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042922-77222.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042922-39552.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042922-13748.png)
解析
试题分析:本题主要考查导数的应用、不等式、三角函数等基础知识,考查思维能力、运算能力、分析问题与解决问题的能力,考查函数思想、转化思想等数学思想方法.第一问,对
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042920-16881.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042920-16881.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042920-19067.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042922-15232.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042922-87585.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042923-65760.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042923-47197.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042923-95926.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042923-97174.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042924-84103.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042924-84103.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042923-97174.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042920-16881.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042924-37516.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042924-68257.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042920-16881.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042921-60797.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042924-55663.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042922-77222.png)
试题解析:∵
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042920-20346.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042924-48154.png)
由题意,得
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042925-78896.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042925-41674.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042925-34863.png)
(1)不等式
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042921-33607.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042923-47197.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042921-33329.png)
记
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042923-95926.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042925-18082.png)
∵
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042926-32476.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042926-19187.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042926-29654.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042926-12555.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042926-84648.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042923-97174.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042927-40000.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042927-11630.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042927-91529.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042921-20127.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042922-39552.png)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042927-49067.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042924-37516.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042928-34960.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042928-25136.png)
∵函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042920-16881.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042921-60797.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042928-59195.png)
则有
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042928-85757.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042928-92358.png)
即
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042929-88748.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042928-92358.png)
∴只有
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042929-89506.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042929-97591.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042922-77222.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042922-13748.png)
核心考点
试题【已知函数(均为正常数),设函数在处有极值.(1)若对任意的,不等式总成立,求实数的取值范围;(2)若函数在区间上单调递增,求实数的取值范围.】;主要考察你对常见函数的导数等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042911-62122.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042911-81269.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042912-81980.png)
(Ⅰ)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042912-29160.png)
(Ⅱ)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042912-29160.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042912-70910.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042901-92561.png)
(Ⅰ)当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042902-39560.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042902-33151.png)
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042902-86531.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042902-41838.png)
(Ⅲ)证明:对任意的正整数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042902-91239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042902-98407.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042843-69235.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042843-61630.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042844-48769.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042844-81787.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042844-21291.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042844-48769.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042844-11809.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042844-38346.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042844-40154.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042845-90186.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042845-59381.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042845-59381.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042845-30958.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042818-25095.png)
(1)当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042818-31231.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042818-67555.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042818-93768.png)
(2)令
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042818-24433.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042819-47620.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042819-46546.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042819-18757.png)
(3)当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042819-17976.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042819-31217.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042820-82311.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018042820-60843.png)
最新试题
- 1阅读下面小诗完成1~3题。 静 夜月光淡淡,笼罩着村外的松林。白云团团,漏出了几点疏星。天河何处?远远的海雾模糊。怕
- 233.Both of the two boys are enjoying their lives ______ the
- 3“五·一”节小王同学在父亲带领下到骆马湖划船游玩。已知船和人总重6000N,划船用的桨是________杠杆(选填“省力
- 4关于静电场的性质有以下几种说法,其中正确的是( )A.点电荷沿电场线移动,电势能可能不变B.负电荷克服电场力做功,电势
- 5解下列方程组:(1);(2)
- 6下列我国特有的珍稀动物与其所属类群对应错误的是 [ ]A.扬子鳄爬行类B.白鳍豚哺乳类 C.大鲵鱼类D.朱鹮鸟类
- 7填空(10分,每空1分)小题1:请根据熟语的意思写出熟语在括号里。①“比喻学习或做事缺乏恒心,时常中断,不能坚持”这个意
- 8阅读下面的议论文,回答问题(4分)别伤害自己只要我们投入生活,难免会遇到来自外界的一些伤害,经历多了,自然有了提防。可是
- 9计算:3(3-13)=______.
- 10If you can"t _____ a better plan, we have to carry out the
热门考点
- 1下列对于匀速圆周运动的说法中,正确的是 [ ]A.线速度不变的运动 B.角速度不变的运动 C.周期不变的运动 D
- 2A、B两个物体从同一地点在同一直线上做匀变速直线运动,,它们的v-t图象如图所示,则A、物体A、B在t=2s时相遇B、物
- 3历史变迁是复杂的。变迁并非都是进步,有时带来的更多是倒退。下列事实不能够证明这一观点的是A.秦二世而亡,汉初推行郡国并行
- 4______ is not good for your health.[ ]A. Milk B. Fruit C
- 5如图所示,半径为R的半圆柱形玻璃砖某一截面的圆心为O点。有两条光线垂直于水平柱面射入玻璃砖中,其中一条光线通过圆心O,另
- 6右图表示三种原子的原子结构:其中●表示质子或电子,○表示中子,则下列有关①②③的叙述正确的组合是a、①②③互为同位素
- 7下列运算正确的是( )A.B.C.D.
- 8目前,治疗白血病最有效的方法是( )A.化学疗法B.放射疗法C.骨髓移植D.基因疗法
- 9当x______时,代数式x4-2的值不小于x2+2的值.
- 10What will the world use for power when it has _____ oil? [