A) 0
B) \[2\,amp\text{ }(z)\]
C) \[\pi \]
D) \[-\pi \]
Correct Answer: C
Solution :
amp(z) \[-amp(-z)={{\tan }^{-1}}\frac{y}{x}-\left( {{\tan }^{-1}}\frac{y}{x}-\pi \right)=\pi \]
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