Nathpoop SG How do i solve1. The points P, Q and R are such that 5QR→ = 3PR→. Given that the position vectors of P and Q relative to an origin O are (-2 4) [in matrix form] and (-6 18) [in matrix form] respectively, find vector OR→.Thanks!
Mikethm SG following are in vector form with arrows omitted.5QR= 3PR5(QO+OR) = 3(PO+OR)-5OQ+5OR = -3OP+3OR2OR = 5OQ-3OP2OR= 5(-6 18) - 3( -2 4)2OR = (-24 78)OR = (-12 39)Concept correct but workings unchecked ok? Check yourself.