题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090043-45754.png)
①函数
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090043-58983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090043-74279.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090044-93912.png)
③函数
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090043-58983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090044-28307.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090043-58983.png)
其中正确命题的序号为 .
写出所有正确的命题的题号: 。
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090044-46057.png)
故①函数
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090043-58983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090043-74279.png)
②
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090044-61682.png)
③函数
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090043-58983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090044-28307.png)
④函数
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090043-58983.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090028-76493.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090028-27534.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090028-58882.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090028-55710.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090028-33333.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090029-37793.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090028-33333.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090029-65598.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090029-66721.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090028-27534.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090028-58882.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090030-44636.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090030-98276.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090028-58882.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090030-74162.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090030-71592.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090031-60672.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090031-53856.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090031-82612.png)
其中假命题的是( )
A.![]() ![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
①设A、B为两个定点,k为非零常数,
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090017-96274.png)
②过定圆C上一定点A作圆的动弦AB,O为坐标原点,若
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090017-44865.png)
椭圆;
③方程
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090017-34382.png)
④双曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090018-10962.png)
其中真命题的序号为 (写出所有真命题的序号)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090008-51797.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090009-33917.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090009-67214.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090009-47868.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090009-59380.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090009-87685.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090010-87133.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090010-79145.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090010-23493.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102090010-14944.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102085940-75000.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102085940-93529.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102085940-22887.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102085941-14666.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102085941-81345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102085941-81132.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102085942-62129.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102085942-83756.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102085934-27842.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102085935-44781.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102085935-40329.png)
④“
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102085935-13470.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102085936-78096.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102085936-84510.png)
A.0 | B.1 | C.2 | D.3 |
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