9000108704

SubArea: 
Points and vectors
Level: 
B
Project ID: 
9000108704
Accepted: 
1
Clonable: 
0
Easy: 
0
Consider a pair of vectors u→=(1;0;−1) and v→=(2;−1;1). Find all the vectors w→ which are perpendicular to both u→ and v→ and satisfy |w→|=2.
w→=(21111;61111;21111), w→=(−21111;−61111;−21111)
w→=(−1;−3;−1), w→=(1;3;1)
w→=(−12;−32;−12), w→=(12;32;12)
w→=(223;322;223), w→=(−223;−322;−223)