题目
已知overrightarrow(a)=(2,1,-1), overrightarrow(b)=(1,-1,2), 则overrightarrow(a)timesoverrightarrow(b)= ( ).A. -1B. (3,-3,-3)C. (2,0,1)D. (1,-5,-3)
已知$\overrightarrow{a}=(2,1,-1)$, $\overrightarrow{b}=(1,-1,2)$, 则$\overrightarrow{a}\times\overrightarrow{b}=$ ( ).
A. $-1$
B. $(3,-3,-3)$
C. $(2,0,1)$
D. $(1,-5,-3)$
题目解答
答案
D. $(1,-5,-3)$