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int(0)^(oo) (45a)/((3+a+a t)^(4))dt=...

`int_(0)^(oo) (45a)/((3+a+a t)^(4))dt=`

A

`(15)/((3+a)^(2))`

B

`(15)/((3+a)^(3))`

C

`(15)/(3(3+a)^(3))`

D

`(15)/(a(3+a)^(2))`

Text Solution

Verified by Experts

The correct Answer is:
B
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