\(\rm \int\log\left(x+{1\over x}\right)dx\) का मूल्यांकन कीजिए। 

1
\(\rm\log ( x + {1\over x})\) - x + C
2
\(\rm log ( x\ +\ {1\over x}) \) - x + 2tan-1 x + C
3
\(\rm\log\left(x+{1\over x}\right)\) + C
4
इनमें से कोई नहीं 

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