Indefinite IntegrationHard
Question
log (x2 + a2) dx = Options
A.
log (x2 + a2) + 
tan−1 
+ c
log (x2 + a2) + tan−1 + cB.− log (x2 + a2) + tan−1 + c
log (x2 + a2) + tan−1 + cC.− log (x2 + a2) − tan−1 + c
log (x2 + a2) − tan−1 + cD.None of these