Find the position vector of a point R which divides the line segment joining P and Q whose position vectors are `2 vec a+ vec b\ a n d\ vec a-4 vec b ,` externally in the ratio 1:2, also show that P is the midpoint of the line segment RQ.

Find the position vector of a point R which divides the line segment joining P and Q whose position vectors are 2vec a+vec b and vec a-4vec b ,externally in the ratio 1:2, also show that P is the midpoint of the line segment RQ.

Find the position vector of a point R which divides the line joining two points P and Q whose position vectors are (2 vec a + vec b) and (vec a - 3 vec b) externally in the ratio 1 :2. Also, show that P is the midpoint of the line segment RQ.

Find the position vector of a point R which divides the line joining two points P and Q whose position vectors are (2vec a+vec b) and (vec a-3vec b) respectively,externally in the ratio 1:2. Also,show that P is the mid-point of the line segment RQ.

Find the position vector of a point R which divides the line joining two points P and Q whose position vectors are P(2veca + vecb) and Q(veca-3vecb) externally in the ratio 1 : 2. Also, show that P is the mid point of the line segment RQ.

Find the position vector of a point R which divides the line joining two points P and Q whose position vectors are (2 veca+vecb) and (veca-3 vecb) externally in the ratio 1: 2 Also show that P is the mid point of the line segment RQ.

Find the position vector of a point R which divides the line joining two points P and Q whose position vectors are (2\ vec a+ vec b) and ( vec a-\ 3 vec b) respectively, externally in the ratio 1:2.Also, show that P is the mid-point of the line segment R Qdot