Video solusi : The point P lies on the line of AB such that vektor AP=1/4 vektor AB. The position vectors, relative to an origin O, of the points A, B, and P are vektor a, vektor b, and vektor p, respectively. Express vektor p in term of vektor a and vektor b. Given that vektor 2p and vektor 3a are the position vectors, relative to O, of the points Q and R, respectively, show that B, Q, and R are collinear.