\[\int_{0}^{\infty }{\frac{\log \,(1+{{x}^{2}})}{1+{{x}^{2}}}}\,dx=\]

1.	\[\int_{0}^{\infty }{\frac{\log \,(1+{{x}^{2}})}{1+{{x}^{2}}}}\,dx=\]
A.	\[\pi \log \frac{1}{2}\]
B.	\[\pi \log 2\]
C.	\[2\pi \log \frac{1}{2}\]
D.	\[2\pi \log 2\]
Answer» C. \[2\pi \log \frac{1}{2}\]

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\[\int_{0}^{\infty }{\frac{\log \,(1+{{x}^{2}})}{1+{{x}^{2}}}}\,dx=\]

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