If `int(1)/((x^(2)+4)(x^(2)+9))dx=A" tan"^(-1)(x)/(2)+Btan^(-1)((x)/(3))+C`, then A-B=A. `1/6`B. `1/(30)`C. `-(1)/(30)`D. `-(1)/(6)`

If `int(1)/((x^(2)+4)(x^(2)+9))dx=A" tan"^(-1)(x)/(2)+Btan^(-1)((x)/(3

1.	If `int(1)/((x^(2)+4)(x^(2)+9))dx=A" tan"^(-1)(x)/(2)+Btan^(-1)((x)/(3))+C`, then A-B=A. `1/6`B. `1/(30)`C. `-(1)/(30)`D. `-(1)/(6)`
Answer» Correct Answer - A

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If `int(1)/((x^(2)+4)(x^(2)+9))dx=A" tan"^(-1)(x)/(2)+Btan^(-1)((x)/(3))+C`, then A-B=A. `1/6`B. `1/(30)`C. `-(1)/(30)`D. `-(1)/(6)`
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