Introduction - If you have any usage issues, please Google them yourself
The boundary value problem of x =p (b])*x (T)+q (T)*x (T) () (T) (T)+r () x (), =alpha (a) () =beta, X (b) O () () [a () (h^2), is obtained by the finite difference method. And attach the three order, four order, five order Rungkuta method (Annex inside)