题目
题型:广州二模难度:来源:
OA |
OB |
OC |
AB |
OC |
A.-
| B.-
| C.
| D.
|
答案
OA |
OB |
OC |
∴
AB |
OB |
OA |
再由
AB |
OC |
3 |
2 |
故选A.
核心考点
试题【已知向量OA=(3,-4),OB=(6,-3),OC=(m,m+1),若AB∥OC,则实数m的值为( )A.-32B.-14C.12D.32】;主要考察你对平面向量的基本定理及坐标表示等知识点的理解。[详细]
举一反三
OC |
OA |
OB |
A.(
| B.(1,3) | C.(
| D.(
|
![魔方格](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104032153-82031.png)
AB |
AD |
AO |
a |
b |
a |
c |
a |
b |
c |
3 |
c |
a |
b |
A.1 | B.-1 | C.2 | D.-2 |
![魔方格](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104032145-85976.png)
a |
b |
c |
c |
a |
b |
λ |
μ |
![魔方格](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104032141-48788.png)