Question

Calculus and Vectors -->
The points A(1, -2, 4), B(3, 5, 7), C(4, 6, 8) are three of four vertices of parallelogram ABCD. Determine the coordinates of vertex D.

Answer 1

midpoint of AC and midpoint point of BD must be same
midpoint of AC is <5/2 ,2,6>
hence coordinate of D is <2*5/2 -3 ,2*2 -5 ,2*6 -7>
D <2,-1,5>