题目
题型:填空题难度:简单来源:不详
①函数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181756-82074.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181756-70061.png)
②奇函数的图象一定通过直角坐标系的原点;
③函数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181756-44160.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181756-80948.png)
④若函数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181757-90541.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181757-96228.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181757-59310.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181757-72924.png)
⑤设函数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181757-53820.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181758-42118.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181758-78537.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181758-17205.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181758-42118.png)
其中正确命题的序号是 .(填上所有正确命题的序号)
答案
解析
试题分析:①因为函数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181756-82074.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181756-70061.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181758-67001.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181756-82074.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181756-70061.png)
②奇函数的图像一定通过直角坐标系的原点,此命题错误,若奇函数在x=0处没定义,则奇函数的图像就不过原点;
③函数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181756-44160.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181756-80948.png)
④因为函数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181757-90541.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181757-96228.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181758-43700.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181757-59310.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181759-23609.png)
⑤设函数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181757-53820.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181758-42118.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181758-78537.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181758-17205.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181758-42118.png)
点评:此题考查的知识点较多,较为综合,属于中档题。抽象函数的有关问题对同学们来说具有一定的难度,特别是求函数的定义域,很多同学解答起来总感棘手,鉴于此,我们在学习时要善于总结。①已知
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181757-53820.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181759-29603.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181757-53820.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181759-42524.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181759-29603.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181759-81943.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181759-29603.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181759-29603.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181757-53820.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181759-29603.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181759-42524.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181759-42524.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181759-97823.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181757-53820.png)
核心考点
试题【给出下列四个命题:①函数与函数表示同一个函数;②奇函数的图象一定通过直角坐标系的原点;③函数的图像可由的图像向上平移1个单位得到;④若函数的定义域为,则函数的定】;主要考察你对指数函数图象及性质等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181754-68001.png)
A.(0,1) | B.(1,2) | C.(2,3) | D.(3,4) |
① 若
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181749-69974.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181749-85334.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181749-35115.png)
②
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181750-60977.png)
③ 函数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181750-84501.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181750-49503.png)
④ 已知
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181750-62519.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181750-53118.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181751-81108.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181751-14700.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181750-62519.png)
其中正确说法的序号是( )
A.①②④ | B.①③④ |
C.②③④ | D.①②③ |
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181743-93584.png)
A.(![]() | B.(1,2) | C.(2,e) | D.(e,3) |
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181737-94147.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181737-65782.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181737-60484.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181737-67753.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181737-99885.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819181737-60484.png)
A.4 | B.3 | C.2 | D.1 |
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