Hi I really need help here.
I'm getting conflicting answers for both questions..
For the image with the P and Q complex number, to find the distance PQ, the textbook says to take z-w.
However, for the image of a parallelogram, to find PR, it is w-z.
I am really confused, If they ask to find eg. AB in terms of a and b, shouldn't B be the place where both arrowheads meet? And thus, A will be -A and thus, AB = b-a?!
Can someone explain what went wrong with my thinking process, I really am confused.
Thank you so much,