Evaluate the integral ∫34+9x2dx\int \frac{3}{4+9x^2} dx∫4+9x23dx.
12arctan(3x2)+C\frac{1}{2} \arctan(\frac{3x}{2}) + C21arctan(23x)+C
16arctan(3x2)+C\frac{1}{6} \arctan(\frac{3x}{2}) + C61arctan(23x)+C
32arctan(2x3)+C\frac{3}{2} \arctan(\frac{2x}{3}) + C23arctan(32x)+C
3arctan(3x)+C3 \arctan(3x) + C3arctan(3x)+C