Determine the integrating factor μ(x)\mu(x)μ(x) for the linear ODE y′+2xy=3y' + \frac{2}{x}y = 3y′+x2y=3.
μ(x)=x\mu(x) = xμ(x)=x
μ(x)=x2\mu(x) = x^2μ(x)=x2
μ(x)=ln(x)\mu(x) = \ln(x)μ(x)=ln(x)
μ(x)=ex\mu(x) = e^xμ(x)=ex