题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070223-35006.gif)
(1)求点E,F的坐标
(2)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070224-89365.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070224-21236.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070224-27251.gif)
解析
核心考点
试题【己知A,B,C三点坐标分别为(-1,0),(3,-1),(1,2),并且.(1)求点E,F的坐标(2)求证: ∥ 】;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/20191104/20191104070219-72555.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070212-91462.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070213-80888.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070213-77828.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070213-56536.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070213-63618.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070214-95903.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070214-56119.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070212-91462.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070213-56536.gif)
A.![]() ![]() ![]() ![]() | B.![]() ![]() ![]() ![]() |
C.![]() ![]() ![]() ![]() | D.![]() ![]() ![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070203-34816.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070203-26862.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070203-29312.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070203-34816.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070203-26862.gif)
A.θ=![]() | B.θ=![]() | C.θ=![]() | D.θ=![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070157-23298.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070158-15938.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070158-56500.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070158-37183.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070158-62073.gif)
A.-16 | B.-8 | C.0 | D.4 |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070150-71190.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070150-49992.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104070150-19141.gif)
最新试题
- 1More and more young people In China celebrate ________Christ
- 2阅读理解。 When former American President Bill Clinton travel
- 3-When will the expert come and give the lecture on economic
- 4LED灯是一种新型的环保节能灯(如图).某款LED灯的额定电压为24V.额定功率为12W,它与“PZ220﹣100”的白
- 5毛泽东主席正式向全世界庄严宣告:中华人民共和国中央人民政府成立了是在 [ ]A.中共七届二中全会B.中国人民政治
- 6用密度为1.84g/cm3的浓硫酸与水配成10mL溶液,吸取上层溶液测得密度为1.08g/cm3,如果吸取下层溶液测密度
- 7Please use sunlight _____ food. [ ]A. make B. making C.
- 82009年是中俄(苏)建交60周年,60年来中俄关系走过了一条曲折发展的道路。阅读下列材料,结合所学知识回答问题。材料一
- 9马克思说:“蒸汽大王在前一个世纪翻转了整个世界,现在他的统治已到末日,另外一种更大得无比的革命力量——电力的火花将取而代
- 10— Shall we have a talk with her tonight? — There is no _____
热门考点
- 1读下面4个国家的轮廓图,回答下列问题。(4分)(1)按序号写出几个国家的名称:① ②
- 2It is considered no use _________ against the deadly disease
- 3下图漫画《禁锢就是,你以为你做不到》的正确解读是A.实践是检验真理的唯一标准B.要充分发挥意识的能动作用C.价值观影响人
- 4已知无穷等比数列{an}的前n项和Sn=13n+a(n∈N*),且a是常数,则此无穷等比数列各项的和等于______(用
- 5翻译下列句子。(1)然而不胜者,是天时不如地利也。_________________________________(2
- 6根据句意及中文提示写出相应的单词。1. What are your ________ (计划) for next wee
- 7(1)在等差数列{an}中,a10=30,a20=50,求a5及前10项和S10;(2)在等比数列{bn}中,b3-b1
- 8 学好语文要多读书,读好书。回顾初中语文学习经历,阅读名著让我们获益良多。请你从读过的名著中选出一部,推荐给即将升入初
- 92011年7月12日在北京人民大会堂举办的两岸万名青年大交流主题联欢活动,堪称今年最高规格、也最具青春活力的两岸民间交流
- 10园艺师能将一株仙人掌培育成具有多种性状、开多种颜色花朵的仙人掌类植物,能达到上述目的的技术是[ ]A.组织培养