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int(x^(2)-1)/((x^(2)+1)sqrt(x^(4)+1)) dx...

`int(x^(2)-1)/((x^(2)+1)sqrt(x^(4)+1))` dx is equal to -

A

A. `(1)/(2)`

B

B. 1

C

C. 2

D

D. 0

Text Solution

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The correct Answer is:
A
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