Values of \( \int_{-1 / 2}^{+1 / 2} \cos x \log \frac{1+x}{1-x} d x...

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Values of \( \int_{-1 / 2}^{+1 / 2} \cos x \log \frac{1+x}{1-x} d x \) is:
\( P \)
(A) \( 1 / 2 \)
(B) \( -1 / 2 \)
(C) 0
(D) none of these
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