大学MOOC calculus(吉林师范大学)1452488187 最新慕课完整章节测试答案
The First Week 1 Vectors and Geometry in Space
test one
1、判断题:
The two vectors a and b are perpendicular to each other, and the necessary and the sufficient condition is 
选项:
A: 正确
B: 错误
答案: 【 正确】
2、判断题:
For any vectors a and b, there is
.
选项:
A: 正确
B: 错误
答案: 【 错误】
3、填空题:
1. Let the vectors a={0,-1,2}, b={-1,3,4}, find a+b=
答案: 【&nb
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