题目
题型:解答题难度:简单来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043746-60065.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043746-74896.png)
(1)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043746-50224.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043746-79841.png)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043747-52260.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043747-51271.png)
(3)证明:
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043747-13766.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043747-72845.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043747-26768.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043747-41764.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043748-56521.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043748-99826.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043748-79224.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043748-25141.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043748-23796.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043749-91189.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043749-82886.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043749-36081.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043749-70524.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043749-92637.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043750-87880.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043750-12653.png)
解析
试题分析:
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043750-34150.png)
(1)令
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043750-95180.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043746-79841.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043750-11373.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043751-61674.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043748-56521.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043748-99826.png)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043748-79224.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043748-25141.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043748-23796.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043749-91189.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043749-82886.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043749-36081.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043749-70524.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043749-92637.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043750-87880.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043750-12653.png)
(3)由(Ⅰ)当
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043749-82886.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043747-51271.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043751-58746.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043751-83001.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043751-58990.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043751-32030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043752-25140.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043752-19056.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043752-96927.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043752-65364.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043752-88898.png)
点评:近几年新课标高考对于函数与导数这一综合问题的命制,一般以有理函数与半超越(指数、对数)函数的组合复合且含有参量的函数为背景载体,解题时要注意对数式对函数定义域的隐蔽,这类问题重点考查函数单调性、导数运算、不等式方程的求解等基本知识,注重数学思想(分类与整合、数与形的结合)方法(分析法、综合法、反证法)的运用.把数学运算的“力量”与数学思维的“技巧”完美结合
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043742-35201.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043742-78938.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043742-95835.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043742-35201.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043742-82866.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043742-80292.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043743-95188.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043743-64059.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043743-31600.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043736-42579.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043736-70750.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043736-62587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043737-24569.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043736-42579.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043724-95218.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043724-87980.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043724-84021.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043724-95218.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043724-87980.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043724-84021.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043724-31005.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043724-13545.png)
(Ⅰ)若
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043725-54967.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043725-36994.png)
(Ⅱ)若不等式
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043725-39328.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043725-70901.png)
(
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043725-69595.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043714-41426.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043714-44058.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043714-63791.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043714-89284.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043714-82361.png)
(2)求
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043715-90905.png)
(3)设函数函数g(x)=
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043715-61724.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043715-47639.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043715-39849.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818043711-71858.png)
最新试题
- 1小强用如图所示的电路研究串联电路特点时,闭合开关S后,他用电压表分别测量了灯L1、L2两端电压,发现灯L1比L2两端电压
- 2小松是住校生,近来迷上网络游戏,经常溜到附近的黑网吧上网,考试时靠作弊蒙混过关,每次均未被发现。班会上,老师要求每个同学
- 3公元618年,一位末代皇帝在江都(今扬州)自觉大势已去,揽镜自照,无奈哀叹:“好头颅,不知谁当斩之!”从这段材料中可以得
- 4一个全部由基因型为Aa的豌豆植株组成的种群,经过连续n代自交,获得的子代中,Aa的频率为(1/2)n,AA和aa的频率均
- 5交往需要技巧。人际交往的最大技巧是A.真心待人B.学会宽容 C.学会微笑D.学会幽默
- 6漫画《出事之后》说明部分政府部门[ ]A、必须切实履行保障人民民主的职能B、要坚持全心全意为人民服务的工作态度C
- 7---What’s the matter? --- I have .A. an a
- 8随着社会的发展,人们对环境问题日益关注,化学小组进行了化石燃料之一的煤的相关探究活动:【查阅资料】①酸雨中含有硫酸和硝酸
- 9酒精的热值是3.0×107J/kg,表示的物理意义是______.一杯酒精倒出一半,剩下酒精的热值______(选填“变
- 10 Not until he got to the factory _______that he had lost hi
热门考点
- 1在平面直角坐标中,直线(为常数且≠0),分别交轴,轴于点、、⊙的半径为个单位长度,如图,若点在轴正半轴上,点在轴的正半轴
- 2流域的自然背景决定了河流的利用方式和流域的开发方向。读田纳西河流域示意图,回答问题:(14分)(1)A处是田纳西河的发源
- 3.下列句子中加点的虚词的使用,正确的一项是 ( )A.华光染织厂不但产量比我们厂高,而且花色品种也比我们厂多
- 4在Rt△ABC中,∠ACB=90°,BC=30,AB=50,点P是AB边上任意一点,直线PE⊥AB,与边AC相交于E,此
- 5 (20分)某同学用废干电池内的黑色固体(可能含有MnO2、NH4Cl、ZnCl2等物质)进行如图所示实验:(1)操作③
- 6把下列句子翻译成现代汉语。(10分)(1)聊乘化以归尽,乐夫天命复奚疑!(3分)译 :
- 7函数f(x)=-的定义域是( )A.{x|2≤x≤3}B.{x|2≤x<3}C.{x|0<x<3}D
- 8已知函数f(x)=x3+ax2+(a+6)x+1在R上没有极值,则实数A的取值范围[ ]A.﹣3≤a≤6B.﹣3
- 9我国正在修建的青藏铁路,在穿过可可西里、楚马尔河、加索等自然保护区的线路上采取了绕避、设置通道措施,这样做(1)能减少青
- 10下列物体属于生物的是 [ ]A.阳光 B.生物书 C.病毒 D.小溪