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int limits 0^ frac pi 4 frac left( 1 - tan...

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Calculus
?

\[\int\limits_0^{\frac{\pi }{4}} {\frac{{\left( {1 - \tan {\text{x}}} \right)}}{{\left( {1 + \tan {\text{x}}} \right)}}{\text{dx}}} \]    evaluates to

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Correct Answer: Option D
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