Oct 13, 2009 #1 DarkPhoenix Messages 10 Reaction score 1 Homework Statement PQ = (-2,3) QR = (1,0) RS = (1,-5) Find PS. PS = PQ + QS ?
Oct 13, 2009 #2 LCKurtz Science Advisor Homework Helper Messages 9,567 Reaction score 775 No. PS = PQ + QR + RS though.