[ Eq(Derivative(x1, t), (1*k10*(k1 + k2*x1*(1 - x1/k4)) + (-1)*k10*k3*x1*x2)/k10),
  Eq(Derivative(x2, t), (1*k10*k5*x2*x3 + (-1)*k10*k6*x2)/k10),
  Eq(Derivative(x3, t), (1*k10*k7*x3*(1 - x3/k8) + (-1)*k10*(k5*x2*x3 + k9*x3))/k10) ]