Which of these is the correct indefinite integral of f(x)=e2xf(x) = e^{2x}f(x)=e2x?
e2x+Ce^{2x} + Ce2x+C
12e2x+C\frac{1}{2}e^{2x} + C21e2x+C
2e2x+C2e^{2x} + C2e2x+C
12ex+C\frac{1}{2}e^x + C21ex+C