\[\int_{\,0}^{\,\infty }{\frac{xdx}{(1+x)(1+{{x}^{2}})}=}\] [Karnataka CET 2003]

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

1.	\[\int_{\,0}^{\,\infty }{\frac{xdx}{(1+x)(1+{{x}^{2}})}=}\] [Karnataka CET 2003]
A.	0
B.	\[\pi /2\]
C.	\[\pi /4\]
D.	1
Answer» D. 1

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\[\int_{\,0}^{\,\infty }{\frac{xdx}{(1+x)(1+{{x}^{2}})}=}\] [Karnataka CET 2003]

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