[SOLVED] Determining if one vector is perpendicular to another.
If the vectors u, v and w in R3 are given by:
U = [-1] V =[ 3] W =[ 1]
....[ 3]....[ 1]....[ 1]
determine which (if any) of the following statements are true:
(i) u is perpendicular to v.
(ii) u is perpendicular to w.
(iii) v is perpendicular to w.
This is a sample question from an exam I had recently. Im not to interested in the answer. More interested in the technique and formulas used.
Apologies for the periods.
Any help is greatly appreciated.