Find the magnitude of u × v and the unit vector parallel to u × v in the direction of u × v.u = 2i + 2j - k, v = -i + k
A. 3; 
i + 
j - 
k
B. 3; 
i - 
j + 
k
C. 9; 
i - 
j + 
k
D. 9; 
i + 
j - 
k
Answer: B
Mathematics
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