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int(0)^(a+b)(f(x-a))/(f(x-a)+f(b-x))dx, ...

`int_(0)^(a+b)(f(x-a))/(f(x-a)+f(b-x))dx`, is equal to

A

a

B

b

C

0

D

`(a+b)//2`.

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The correct Answer is:
D
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