问题
填空题
已知向量
|
答案
∵
=(3,5,1),a
=(2,2,3),b
=(4,-1,-3),c
∴向量2
-3a
+4b c
=2(3,5,1)-3(2,2,3)+4(4,-1,-3)
=(16,0,-19)
故答案为:(16,0,-19).
已知向量
|
∵
=(3,5,1),a
=(2,2,3),b
=(4,-1,-3),c
∴向量2
-3a
+4b c
=2(3,5,1)-3(2,2,3)+4(4,-1,-3)
=(16,0,-19)
故答案为:(16,0,-19).