underset(0)overset(oo)int (x)/((1+x)(1+x...

`underset(0)overset(oo)int (x)/((1+x)(1+x^(2)))dx`

`(pi)/(4)`

`(pi)/(2)`

` int _(0) ^(infty) ( dx)/(( 1 + x ) (1 + x^(2)))` के समान

ज्ञात नहीं किया जा सकता

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The correct Answer is:

A, C

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