NCERT Miscellaneous Exercise Q9 - Vector Algebra
Question: Find the position vector of R dividing the join of P(2a+b) and Q(a-3b) externally in the ratio 1:2. Also show that P is the mid-point of RQ.
Answer: 3a + 5b; P is the mid-point of RQ (shown).
Full step-by-step NCERT solution with diagrams on Something by Zero.