For points P(3,−2,5) and Q(−1,4,0) in three-dimensional space, answer the following:
(a) Part 1: (i) Define the position vector of a point and state its usual notation.
(b) Part 2: (ii) Explain, with reason, whether the vectors PQ and QP are equal.
(c) Part 3: (iii) Write the vectors OP and PQ in i^,j^,k^ form and list their individual components.