\[\int_{-\pi /2}^{\pi /2}{\frac{\cos x}{1+{{e}^{x}}}\,dx=}\] [EAMCET 1992]

\[\int_{-\pi /2}^{\pi /2}{\frac{\cos x}{1+{{e}^{x}}}\,dx=}\]

1.	\[\int_{-\pi /2}^{\pi /2}{\frac{\cos x}{1+{{e}^{x}}}\,dx=}\] [EAMCET 1992]
A.	1
B.	0
C.	\[-1\]
D.	None of these
Answer» B. 0

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\[\int_{-\pi /2}^{\pi /2}{\frac{\cos x}{1+{{e}^{x}}}\,dx=}\] [EAMCET 1992]

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