The value of \[Arg\left[ i\,\,\ln \left( \frac{a-ib}{a+ib} \right) \right],\] where a and b are real numbers, is

The value of \[Arg\left[ i\,\,\ln \left( \frac{a-ib}{a+ib} \right) \ri

1.	The value of \[Arg\left[ i\,\,\ln \left( \frac{a-ib}{a+ib} \right) \right],\] where a and b are real numbers, is
A.	\[0\] or \[\pi \]
B.	\[\frac{\pi }{2}\]
C.	not defined
D.	None of these
Answer» B. \[\frac{\pi }{2}\]

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The value of \[Arg\left[ i\,\,\ln \left( \frac{a-ib}{a+ib} \right) \right],\] where a and b are real numbers, is

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