Complex Numbers And Quadratic Equations question 105

Question: If $ z_1,z_2\in C $ , then $ amp( \frac{{z_1}}{{{{\text{\bar{z}}}}_2}} )= $

Options:

A) $ amp(z_1{{\overline{z}}_2}) $

B) $ amp({{\overline{z}}_1}z_2) $

C) $ amp( \frac{z_2}{{{{\bar{z}}}_1}} ) $

D) $ amp( \frac{z_1}{z_2} ) $

Show Answer

Answer:

Correct Answer: C

Solution:

$ arg( \frac{z_1}{{{{\bar{z}}}_2}} )=argz_1-arg({{\overline{z}}_2})=argz_1+argz_2 $ $ =arg(z_1.z_2) $ Option (c) gives the same result.