题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083716-71897.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083716-52803.gif)
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答案
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083717-68855.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083717-24456.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083717-87131.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083718-39203.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083718-93002.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083718-92803.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083718-33385.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083719-40191.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083719-75862.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083717-24456.gif)
核心考点
试题【已知向量,向量,求的最大值和最小值。】;主要考察你对平面向量数量积的意义等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083710-90384.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083710-13598.gif)
A.![]() | B.![]() | C.![]() | D.![]() |
A.若a×b=0,则a=0或b=0 | B.若a×b=0,则a∥b |
C.若a∥b,则a在b上的投影为|a| | D.若a⊥b,则a×b=(a×b)2 |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083701-92465.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083701-69133.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083701-95456.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083702-14492.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083702-78120.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083654-37158.gif)
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![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083655-64462.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083655-36235.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083655-57598.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083655-39047.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083645-43653.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083646-71686.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104083646-64878.gif)
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