第九章单元测试
- What is the vector where is point and is point .( )
- Given , , . Find: .( )
- Given , , . Find: .( )
- Given , , . Find: the angle between and .( )
- Vectors and are defined in terms of and as and .( )
If , find the values of and . - Is that the vectors and are perpendicular?( )
- If and , find and the angle between and .( )
- Let , , find .( )
- Let be a standard-position vector with terminal point . Let be a vector with initial point and terminal point . Find the magnitude of vector .( )
- Consider vectors , , . Determine the scalars and such that .( )
A: B: C: D:
答案:
A:-3 B:-2 C:3 D:2
A:5 B:6 C:-6 D:-5
A: B: C: D:
A:, B:, C:, D:,
A:对 B:错
A:, B:, C:, D:,
A:3 B:4 C:-4 D:-3
A:10 B:15 C:-10 D:-15
A:, B:, C:, D:,
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