Q .     ` int (1 + x- x^(-1)) e^(x+x^(-1))dx` is equal to

VIT 2013
A

`(x+1) e^(x+x^(-1))`

B

`(x-1) e^(x+x^(-1)) +C`

C

`xe^(x+x^(-1)) +C`

D

`(x+1) e^(x+x^(-1)) x +C`

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