题目
题型:不详难度:来源:
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其中真命题的序号为 (写出所有真命题的序号).
答案
解析
试题分析:对于①,由双曲线的定义可知,动点
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024023807-31639.png)
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核心考点
试题【以下四个关于圆锥曲线的命题中:①设为两个定点,为非零常数,,则动点的轨迹为双曲线;②过定圆上一定点作圆的动点弦,为坐标原点,若则动点的轨迹为圆;③设是的一内角,】;主要考察你对双曲线的定义与方程等知识点的理解。[详细]
举一反三
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A.![]() | B.![]() | C.![]() | D.![]() |
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A.![]() | B.![]() | C.![]() | D.![]() |
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