题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052645-66481.png)
(1)当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052645-99780.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052645-64086.png)
(2)讨论函数的单调性;
(3)若函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052645-13587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052646-76642.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052646-76566.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052646-73359.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052646-98392.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052647-74163.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052647-18585.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052647-38480.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052647-25166.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052647-64211.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052648-46514.png)
解析
试题分析:解:(1)当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052648-79080.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052648-36613.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052648-83652.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052649-11086.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052649-51521.png)
又
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052649-18324.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052649-59032.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052650-39101.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052647-74163.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052647-18585.png)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052650-67959.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052650-67625.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052650-54924.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052651-92960.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052647-25166.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052651-89016.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052651-68911.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052651-83043.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052651-54812.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052651-68911.png)
综上,当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052647-38480.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052647-25166.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052647-64211.png)
(3)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052652-16036.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052652-49524.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052652-54592.png)
又
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052652-70122.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052653-53112.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052653-31235.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052653-46688.png)
令
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052653-26471.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052653-29627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052654-20851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052654-35057.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052654-58108.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052654-36018.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052655-89268.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052648-46514.png)
点评:求较复杂函数的性质,常用到导数。导数对求函数的单调区间、最值、不等式等问题都有很大作用。
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052636-39389.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052637-58726.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052632-24575.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052633-73831.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052632-24575.png)
A.充分条件 | B.必要条件 | C.必要非充分条件 | D.充要条件 |
(1)求函数f(x)的单调区间;
(2)若关于x的方程f(x)=x2+x+a在[0,2]上恰有两个相异实根,求实数a的取值范围.
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052621-89362.png)
(1)要使
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052622-33099.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052622-44516.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052622-33099.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052622-69867.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052622-64593.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052607-55357.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052607-10674.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052607-25272.png)
(2)如果函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052607-69411.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052607-12262.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052608-13783.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052608-40651.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052608-42599.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052608-21606.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052608-72326.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052609-18346.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052608-40651.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018052608-42599.png)
最新试题
- 1已知集合的值为 ( )A.1或-1或0B.-1C.1或-1D.0
- 2科技是推动社会进步的强大动力。下列人物与成就相对应正确的是( )A.毕升——指南针B.牛顿——量子理论C.瓦特——改良蒸
- 3对下列各句修辞手法的分析不正确的一项是[ ]A.云彩和田野是一对情侣,我是他们之间传情的信使。(拟人、比喻)
- 4钒(v)及其化合物广泛应用于工业催化、新材料和新能源等领域。 V2O5是接触法制硫酸的催化剂。 (1)一定条件下,SO2
- 5线圈在匀强磁场中绕垂直于磁场且在线圈平面内的轴匀速转动时产生交变电流,以下说法正确的是( )A.当线圈位于中性面时,线
- 6某人骑自行车以υ1 = 5m/s的速度匀速前进,某时刻在他正前方9m处以υ2 = 12m/s的速度同向行驶的汽车开始关闭
- 7After many years of hard work, his dream _________ at last.A
- 8完形填空。 Roberta appeared on the stage. She took a deep bre
- 9Find ways to praise your children often, ________ you"ll fin
- 10[本小题满分12分]为了了解小学生的体能情况,抽取了某小学同年级部分学生进行跳绳测试,将所得的数据整理后画出频率分布直方
热门考点
- 1– How do you like the essays written by the students? – ____
- 2近代社会的民主思想与实践材料一 1907年,梁启超在日本组织立宪团体政闻社,创办《政论》杂志,发表了政闻社宣言书,其中提
- 3①迁都洛阳②改鲜卑族姓氏为汉族姓氏③采用汉族官制④学习汉族礼法,尊崇孔学⑤……这是中国古代一位帝王改革的内容。他的改革,
- 4下列关于室温下氨水的叙述,正确的是 [ ]A. 相同浓度的氨水和NaOH溶液,能分别与相同浓度的盐酸恰好中和B.
- 5安全、清洁、方便的太阳能越来越受到人们的重视并被广泛应用,一太阳能热水器内装有50 kg 、20 ℃的水,在阳光照射6
- 6【题文】函数,若,则实数的值是 A.B.C.或D.或
- 7阅读下面的材料,用四个四字短语概括“潮人”的特点。 潮人就是所谓的潮流人士,属于走在时尚顶端的人。现在有太多的人把潮人
- 8It’s always difficult being in a foreign country, __________
- 9以下是我国古代诸子百家的一些名言佳句,欣赏并回答有关问题。合抱之木,生于毫末;九层之台,起于累土;千里之行,始于足下。—
- 10设函数f(x)=sinx的导函数为f"(x),则f(π2)+f′(π2)等于( )A.2B.1C.0D.-1