Introduction - If you have any usage issues, please Google them yourself
1 Uses: 4-order classical Runge-Kutta solution of ordinary differential equation form y ' = f (x, y), y (x0) = y0 Format: [x, y] = marunge4 (dyfun, xspan, y0, h ) dyfun for the function f (x, y), xspan for solving the interval [x0, xn], y0 as the initial value, h the step size, x return to the node, y return to numerical solution of 2 Usage: solving equations using LU decomposition Groups of Ax = b