int(1)^(3)(1)/(sqrt(x+1)-sqrt(x-1))dx=...

`int_(1)^(3)(1)/(sqrt(x+1)-sqrt(x-1))dx=`

A

`4/3`

B

`5/3`

C

`7/3`

D

`8/3`

Verified by Experts

The correct Answer is:

D

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