Indefinite IntegrationHard

Question

dx is equal to

Options

A.x - ln |x| + ln (x2 + 1) - tan-1x + C
B.x - ln |x| + ln (x2 + 1) - tan-1x + C
C.x + ln |x| +  ln (x2 + 1) + tan-1x + C
D.none of these

Solution


= x - tan-1x - ln|x| + ln (x2 + 1) + C

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