题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082245-21349.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082245-72423.png)
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
由已知可得
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082246-35307.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082247-48034.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082247-14534.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082245-21349.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082245-72423.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082246-74660.png)
核心考点
试题【已知A(1,1,1),B(-1,0 ,4),C(2 ,-2,3),则〈,〉的大小为()A.B.C.D.】;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/20191104/20191104082239-40526.png)
若
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082239-26823.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082239-59793.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082239-11692.png)
则
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082240-76178.png)
A.R | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082232-49756.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082232-94171.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082232-22211.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082233-29782.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082233-72096.gif)
求使不等式
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082232-49756.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082232-22211.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082233-45704.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082232-94171.gif)
已知向量
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082222-53318.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082222-48940.gif)
(1)试判断向量
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082222-28557.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082222-31990.gif)
(2)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082223-24741.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082213-64537.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082214-16145.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082214-12266.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082214-96160.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082215-59658.gif)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082207-28628.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082207-50162.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082207-64949.gif)
⑴求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082208-24260.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082208-28194.gif)
⑵求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082208-24260.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082208-46158.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104082208-37918.gif)
最新试题
- 1资源配置就是指人们( )A.对资源使用作出的安排B.对劳动力的使用作出的安排C.对社会生产作出的安排D.对商品
- 2阅读下面这首唐诗,回答问题。清溪行① 李 白清溪清我心,水色异诸水。借问新安江,见底何如此?人行明镜中,鸟度屏风里。向
- 31985年,科学家们发现了一种新物质,其化学式为C60.下列说法不正确的是( )A.它是由60个碳原子构成的B.它是一
- 4(1)实验室加热固体混合物制气体,检查该装置气密性的方法是:先把导管一端插入水面下,再用酒精灯微微加热试管外壁,如果导管
- 5下列函数中,(1)y-x2=0,(2)y=(x+2)(x-2)-(x-1)2,(3)y=x2+1x,(4)y=x2+2x
- 6下列化学肥料属于复合肥料的是 [ ]A.尿素:CO( NH2)2B.重过磷酸钙:Ca( H2PO4)2:C.氯
- 7幸福是什么?幸福在哪里?人们一直在追问、在寻找。其实,幸福原来就是父母给你的一杯清茶,老师给你的赞许的目光;幸福原来就是
- 8How long did you spend _________ TV last night?A.watchB.watc
- 9在函数y=(k为常数)的图象上有三个点(﹣2,y1),(﹣1,y2),(,y3),函数值y1,y2,y3的大小为(
- 10如图所示,距离为L的两块平行金属板A、B竖直固定在表面光滑的绝缘小车上,并与车内电动势为U的电池两极相连,金属板B下开有
热门考点
- 1—You seemed not to be interested in the story yesterday.—Yes
- 2借助计算机或计算器,用二分法求方程log2(x+4)=2x的根的近似值.(精确到0.1)
- 3小晶和小红玩掷骰子游戏,每人将一个各面分别标有1,2,3,4,5,6的正方体骰子掷一次,把两人掷得的点数相加,并约定:点
- 4下列措施能改善水质的是( )①应用新工艺,新技术减少污染物;②合理使用农药和化肥;③工业三废达标后排入;④生活污水集中
- 5下列鉴别一氧化碳和氢气的方法正确的是 [ ]A. 点燃两种气体,观察火焰的颜色 B. 将两种气体分别与空气混合,
- 6下列对化学反应的表示正确的是( )A.用铜作电极电解硫酸铜溶液的离子方程式:2Cu2++2H2O4H++2Cu+O
- 7 ①人有时一犹豫就错过了良机,辰这样想。此时老教授正在滔滔不绝地和新生们沟通感情,辰就没办法把两千元钱交上,
- 8— Does your mother often _____ newspapers after supper? — Ye
- 9如图,以O为圆心,半径为2的圆与反比例函数y=(x>0)的图象交于A、B两点,则的长度为 ( )
- 10 被恩格斯称为“中世纪的最后一位诗人,同时又是新时代最初一位诗人”的是谁?A.达芬奇B.但丁C.歌德D.莎士比亚