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`int (dx)/(x^(2)+16)=?`A. `(1)/(16) tan^(-1). (x)/(16)+k`B. `(1)/(4) tan^(-1). (x)/(4) +k`C. `1/4 tan^(-1) . (4)/(x) +k`D. `1/4 tan^(-1). (16)/(x^(2))+k`

Answer» Correct Answer - B


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