题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020931-97909.png)
(1)当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020931-95187.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020931-84019.png)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020931-11784.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020931-68103.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020931-53392.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020931-84019.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020931-40172.png)
(3)试判断当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020931-12983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020931-84019.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020931-84019.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020932-17683.png)
(3)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020931-84019.png)
解析
试题分析:(1)求导即可知其单调性;(2)利用导数求出函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020932-68042.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020931-40172.png)
(3)设
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020932-22649.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020932-11781.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020931-84019.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020932-87214.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020933-11452.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020933-90082.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020933-35864.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020933-54445.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020933-49587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020933-35864.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020933-54445.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020931-84019.png)
(1)由题知
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020934-78588.png)
因为
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020934-73636.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020934-66694.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020931-84019.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020932-17683.png)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020932-68042.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020934-92889.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020934-20253.png)
所以函数Q点处的切线与直线AB平行; .7分
(3)设
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020932-22649.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020932-11781.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020931-84019.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020935-63576.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020935-81717.png)
即
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020933-11452.png)
设
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020933-90082.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020933-35864.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020933-54445.png)
设函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020933-49587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020935-17995.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020935-86699.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020933-54445.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020935-41649.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020933-35864.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020933-54445.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020931-84019.png)
核心考点
试题【已知函数.(1)当时,讨论函数的单调性;(2)当时,在函数图象上取不同两点A、B,设线段AB的中点为,试探究函数在Q点处的切线与直线AB的位置关系?(3)试判断】;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/20191018/20191018020924-35275.png)
A.![]() | B.![]() | C.![]() | D.![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020914-36178.png)
4x-y-1=0,且点 P0 在第三象限,
求P0的坐标; ⑵若直线
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020914-31419.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020902-90636.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020903-40695.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020903-33067.png)
⑴当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020903-81306.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020903-12246.png)
⑵若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020904-94966.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020903-12246.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020904-54982.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020904-52802.png)
(3)⑵的条件下,求直线
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020904-24768.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020903-12246.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020847-41829.png)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020848-30722.png)
(2)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020848-30722.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020848-79544.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020848-35379.png)
(3)对一切的
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020848-62623.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020848-88255.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020848-72142.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020841-87718.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020841-57148.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020841-83580.png)
A.![]() | B.e | C.![]() | D.![]() |
最新试题
- 1下列各组离子中,在碱性溶液中共存,且在加入盐酸过程中会产生沉淀和气体的是( )A.Na+、NO3-、AlO2-、SO4
- 2甲物体的质量是乙物体质量的5倍,它们同时从同一点由静止开始下落,不计空气阻力,则下列说法正确的是( )A.甲比乙先着地
- 3I work in a small shop. It is near____46____English school.
- 4下列情形中,与近视眼矫正相符的是[ ]A.B.C.D.
- 5根据短文内容,填写正确的单词或句子。 Many people go to school for educati
- 6—When did Hong Kong return to our motherland? —____ July 1st
- 7我国领土最东端位于[ ]A.台湾省B.黑龙江省C.海南省D.新疆维吾尔自治区
- 8漫画《无言的结局》反映了一个打工者因赌博被妻子“踢”了的事实,这是赌博者的必然结局。这是因为[ ]①赌博是一种愉
- 9如图所示,两个质量为m的物体A和B紧靠在一起放在光滑水平桌面上,如果它们分别受到水平推力F1和F2,且F1>F2,
- 10《资政新篇》、《人权宣言》、《中华民国临时约法》、英国的《权利法案》,它们具有的共同点是A.都是在资产阶级革命期间发布的
热门考点
- 1现代市场经济建立与发展的前提和基础是 [ ]A、公平竞争化 B、生
- 2阅读下面短文,从短文后所给各题的A、B、C、D四个选项中选出能填入相应空白处的最佳选项。 On August 26,
- 32011年2月25日,国务院国资委首次召开中央企业农民工工作会议,会议指出,农民工已经成为推进中央企业改革发展不可或缺的
- 4阅读理解。 George Zimmerman"s first court appearance before a
- 5设f(x)=lg(21-x+a)是奇函数,则使f(x)<0的x的取值范围是( )A.(-1,0)B.(0,1)C.(-
- 6通电螺线管两端的磁极性质跟电流方向的关系可以用 _________ 来判断。
- 7作为中华人民共和国的公民,不仅享有广泛的权利,还要积极履行法定义务。下列属于公民法定义务的是 ( )A.在网络上
- 8下列分离或提纯物质的方法正确的是 [ ]物质 杂质试剂及主要操作A.苯 Br2加苯酚过滤B.CO2SO2通过
- 9已知全集U=R,且A={x
- 10对于项数为m的数列{an}和{bn},记bk为a1,a2,…ak(k=1,2,…m)中的最小值.给出下列判断:①若数列{