What is the derivative of f(x)=x4exf(x) = x^4 e^xf(x)=x4ex?
4x3ex+x4ex4x^3 e^x + x^4 e^x4x3ex+x4ex
x3ex(x+4)x^3 e^x (x+4)x3ex(x+4)
Both a and b
4x3ex4x^3 e^x4x3ex