题目
题型:不详难度:来源:
①
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125729-66815.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125729-98792.png)
②对于任意实数x,有
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125730-65243.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125730-46783.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125730-86088.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125730-43420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125731-11942.png)
③函数
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125731-62278.png)
④若对
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125731-55210.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125731-28904.png)
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125730-65243.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125732-38041.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125730-46783.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125732-38041.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125730-43420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125732-64782.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125732-31328.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125730-43420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125733-13849.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125733-17287.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125732-64782.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125733-83479.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125733-98508.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125734-16137.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125731-62278.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125734-44283.png)
核心考点
试题【给出下列四个命题:①的否定是;②对于任意实数x,有,且时, , 则时,③函数是偶函数;④若对函数f(x)满足,则4是该函数的一个周期,其中真命题的个数为 】;主要考察你对四种命题等知识点的理解。[详细]
举一反三
① 若命题p:存在
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125712-17232.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125712-88584.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125712-17232.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125712-86898.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125712-44166.gif)
②已知直线
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125713-14644.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125713-63967.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125713-89922.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125713-71200.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125714-54416.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125714-65519.gif)
③命题“若
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125714-85952.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125714-26940.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125715-80640.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125715-94105.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125716-35475.gif)
其中正确结论的序号为
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125658-65594.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125659-95018.png)
① 若
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125659-70736.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125658-65594.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125659-95018.png)
② 若
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125659-70736.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125658-65594.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125659-95018.png)
③ 若
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125659-50421.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125658-65594.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125659-95018.png)
④ 若
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125659-50421.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125658-65594.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125659-95018.png)
其中正确的命题有_________(填写正确命题的序号)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125641-91835.png)
①
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125641-68387.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125641-76509.png)
③若m//n,则
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125641-76509.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102125642-28012.png)
A.1个 | B.2个 | C.3个 | D.4个 |
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