Question

The complex numbers z1 , z2, z3 are the vertices A, B, C of a parallelogram ABCD, then the fourth vertex D is

(1) 1/2(z1+z2)

(2) 1/4(z1+z2+z3+z4)

(3) 1/2(z1+z2+z3)

(4) z1+z3-z2

Answer 1

Correct Option (4) z1+z3-z2

Explanation:

z4=z1+z3-z2