Find ∫dxx2+4x+13\int \frac{dx}{x^2+4x+13}∫x2+4x+13dx.
13arctan(x+23)+C\frac{1}{3} \arctan(\frac{x+2}{3}) + C31arctan(3x+2)+C
19arctan(x+23)+C\frac{1}{9} \arctan(\frac{x+2}{3}) + C91arctan(3x+2)+C
arctan(x+23)+C\arctan(\frac{x+2}{3}) + Carctan(3x+2)+C
13ln(x2+4x+13)+C\frac{1}{3} \ln(x^2+4x+13) + C31ln(x2+4x+13)+C