This webpage uses the Runge-Kutta-Fehlberg fourth-order method with fifth-order error checking (RKF45) to approximate the solution to Chen equations: \[ \begin{aligned} \dfrac{dx}{dt} &= a (y-x) \\ \dfrac{dy}{dt} &= x(c-a-z) + cy \\ \dfrac{dz}{dt} &= xy - b z. \end{aligned} \]