Find the derivative of f(x)=x3e−xf(x) = x^3 e^{-x}f(x)=x3e−x.
x2e−x(3−x)x^2 e^{-x}(3 - x)x2e−x(3−x)
x2e−x(3+x)x^2 e^{-x}(3 + x)x2e−x(3+x)
e−x(3x2−x3)e^{-x}(3x^2 - x^3)e−x(3x2−x3)
x3e−x−3x2e−xx^3 e^{-x} - 3x^2 e^{-x}x3e−x−3x2e−x