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If int(1)/((x^(2)+4)(x^(2)+9))dx=A" tan"...

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

A

(a) `1/6`

B

(b) `1/30`

C

(c) `-1/30`

D

(d) `-1/6`

Text Solution

Verified by Experts

The correct Answer is:
A
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