题目
题型:不详难度:来源:
(1)函数
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100502-76023.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100503-64528.png)
(2)若命题p:“存在
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100503-34035.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100503-27106.png)
(3)函数
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100503-86112.png)
(4)函数
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100504-67395.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100504-60931.png)
(5) 已知直线
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100504-95203.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100504-44499.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100505-36470.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100505-11903.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100505-75331.png)
其中所有正确命题的序号是________.
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100505-75557.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100506-56344.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100506-84253.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100506-28123.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100507-43113.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100507-65799.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100507-20857.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100505-11903.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100505-75331.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100505-11903.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100507-42634.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100508-18382.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100508-28683.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100508-19156.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100508-84780.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100509-60674.png)
核心考点
试题【.下列5个命题:(1)函数的图象向左平移个单位,所得函数图象关于原点对称;(2)若命题p:“存在 ”,则命题p的否定为:“任意”;(3)函数的零点有2个;(4)】;主要考察你对四种命题等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100431-74035.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100432-55878.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
①“
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100413-98664.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100413-25562.png)
②若命题
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100414-37225.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100414-67722.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100414-40387.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100414-67208.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100415-36812.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100415-74228.png)
③如果实数
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100415-26033.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100415-94912.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100415-72430.png)
④在
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100416-71918.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100416-54349.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100416-83822.png)
其中真命题的个数为( )
A.1 | B.2 | C.3 | D.4 |
①在平面内, 设
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100341-20657.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100341-22325.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100341-87064.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100342-38267.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100342-26003.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100341-87064.png)
②已知△ABC的周长为20,且顶点B (0,-4),C (0,4),则顶点A的轨迹方程是
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100342-75767.png)
③双曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100342-92842.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100343-87780.png)
其中是真命题的序号为 .(写出所有真命题的序号)
(1)存在xÎ(0,
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100322-21843.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100322-74464.png)
(2) 存在区间(a,b),使y=cosx为减函数而sinx<0;
(3)y =tanx在其定义域内为增函数;
(4)y = cos2x+sin(
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100322-21843.png)
(5)y = sin|2x+
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102100323-16917.png)
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