Indefinite IntegrationHard
Question
cot−1
dx equals-Options
A.x tan−1 x + 
log (1 + x2) + c
log (1 + x2) + cB.x cot−1 1/x − log (1 + x2) + c
log (1 + x2) + cC.x cot−1 1/x + log (1 + x2) + c
log (1 + x2) + cD.None of these
cot−1 dx equals-