Let ABCD be as parallelogram. If ` vec a ,\ vec b ,\ vec c` be the position vectors `of\ A ,\ B ,\ C` respectively with reference to the origin O, find the position vector of D reference to O.

Explanation

According to question , Let the position vector of A and C be t and C respectively.
Therefore,
Position vector of B`=vec{b}=1+c`

Also Position vector of E`=frac{b+2 c}{3}=frac{1+3 c}{3}`

(ii)
Now point P lies on angle bisector of angle A O C. Thus,
Position vector of point p`=lambda(frac{z}{|z|}+frac{vec{b}}{|vec{b}|)`

Also let P divides E.A in ratio `mu: 1`.
Therefore,
Position vector of?
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