Let x, y ϵ R, then x + iy is a non real complex number if:

Which of the following is correct for any two complex numbers z₁ and z₂?

The point represented by the complex number 2 – i is rotated about origin through an angle π/2 in the clockwise direction, the new position of point is:

If a + ib = c + id, then

The complex number z which satisfies the condition lies on