1.

\[\int_{-\,\pi /2}^{\,\pi /2}{\,\frac{\sin x}{1+{{\cos }^{2}}x}{{e}^{-{{\cos }^{2}}x}}dx}\] is equal to              [AMU 1999]

A.                 \[2{{e}^{-1}}\]  
B.                 1
C.                 0             
D.                 None of these
Answer» D.                 None of these


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