In Figure 5, vector OA = a and vector OB = b
The point C divides OB in the ratio 1: 3
The point D is the midpoint of AC
(a) Find, as a simplified expression in terms of a and b
The point E is such that OE = x 0A
Given that E, D and B are collinear
(b) find the value of x
Given that (Area triangle OAC)/(Area triangle OEB)= u
(c) find the value of u
I don’t know how to insert an image but I really hope someone can help with (c)