题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033504-20881.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033504-17619.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033504-72951.png)
①对任意实数
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033504-26545.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-48544.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-75549.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-62424.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033506-55605.png)
②对任意实数
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033504-26545.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-48544.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-75549.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-62424.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033506-55605.png)
③对任意实数
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-48544.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033506-31837.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-75549.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-62424.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033506-55605.png)
④对任意实数
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033506-31837.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-48544.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-75549.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-62424.png)
其中正确的命题有_____________
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033504-20881.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033504-17619.png)
①对任意实数
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033504-26545.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-48544.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-75549.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-62424.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033506-55605.png)
②对任意实数
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033504-26545.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-48544.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-75549.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-62424.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033506-55605.png)
③对任意实数
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-48544.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033506-31837.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-75549.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-62424.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033506-55605.png)
④对任意实数
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033506-31837.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-48544.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-75549.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033505-62424.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033506-55605.png)
故填写②④
核心考点
试题【已知圆直线下面四个命题①对任意实数和直线和圆相切②对任意实数和直线和圆有公共点③对任意实数必存在实数使得直线和圆相切④对任意实数必存在实数使得直线和圆相切其中正】;主要考察你对圆的方程等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033459-15932.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033459-15845.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033459-96344.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033459-93310.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033500-90482.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033448-88190.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033448-52175.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033448-89291.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033449-72086.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033449-42187.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033449-31360.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033449-29770.png)
轴
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033449-53209.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033450-34579.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033450-91189.png)
(2)是否存在直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033450-53449.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033450-93930.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033450-34579.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033451-50237.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033451-11436.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033451-74872.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033451-95629.png)
圆过坐标原点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033452-12517.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033451-74872.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033450-53449.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033450-91189.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033451-74872.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033443-15859.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033443-87471.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033443-59353.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033439-62549.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033439-33994.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033436-83976.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023033436-38353.png)
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