题目内容
若
=(2,-3,1),
=(2,0,3),
=(0,2,2),则
•(
+
)=______.
| a |
| b |
| c |
| a |
| b |
| c |
| b |
| c |
则
| a |
| b |
| c |
故答案为:3.
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相关题目
若
=(2,-3,1),
=(2,0,3),
=(0,2,2),则
•(
+
)=( )
| a |
| b |
| c |
| a |
| b |
| c |
| A、4 | B、15 | C、7 | D、3 |
题目内容
| a |
| b |
| c |
| a |
| b |
| c |
| b |
| c |
| a |
| b |
| c |
| a |
| b |
| c |
| a |
| b |
| c |
| A、4 | B、15 | C、7 | D、3 |