What is the result of multiplying a complex number by its conjugate zˉ\bar{z}zˉ?
The square of the modulus ∣z∣2|z|^2∣z∣2.
The modulus ∣z∣|z|∣z∣.
The square root of the modulus ∣z∣\sqrt{|z|}∣z∣.
Always a purely imaginary number.