Which function f(x)f(x)f(x) satisfies f′(x)=2f(x)f'(x) = 2f(x)f′(x)=2f(x) and f(0)=3f(0) = 3f(0)=3?
f(x)=3exf(x) = 3e^xf(x)=3ex
f(x)=3e2xf(x) = 3e^{2x}f(x)=3e2x
f(x)=e2x+2f(x) = e^{2x} + 2f(x)=e2x+2
f(x)=2e3xf(x) = 2e^{3x}f(x)=2e3x