Question

Let $z$ be a complex number such that the principal value of argument, $\arg z>0$. Then $\arg z-\arg (-z)$ is
(A) $\frac{\pi}{2}$
(B) $\pm \pi$
(C) $\pi$
(D) $-\pi$

Answer 1

Ans: (C)
Hint : $\arg (z)-\arg (-z)=\arg \left(\frac{z}{-z}\right)=\arg (-1)=\pi$

Answer 2

cialis 5mg price <a href="https://ordergnonline.com/">tadalafil 40mg sale</a> herbal ed pills

Answer 3

order tadalafil online <a href="https://ordergnonline.com/">generic cialis india</a> online ed pills