Identify the derivative of f(x)=ln(x2+e3x)f(x) = \ln(x^2 + e^{3x})f(x)=ln(x2+e3x) with respect to xxx.
2x+3e3xx2+e3x\frac{2x + 3e^{3x}}{x^2 + e^{3x}}x2+e3x2x+3e3x
2x+e3xx2+e3x\frac{2x + e^{3x}}{x^2 + e^{3x}}x2+e3x2x+e3x
1x2+e3x\frac{1}{x^2 + e^{3x}}x2+e3x1
2x+3e3x2x + 3e^{3x}2x+3e3x