Recent content by mlouky

  1. mlouky

    Fortran I to solve ODE with rk4 y" + 2y =0 in fortran

    ok I understand thank you
  2. mlouky

    Fortran I to solve ODE with rk4 y" + 2y =0 in fortran

    thanks rcgldr
  3. mlouky

    Fortran I to solve ODE with rk4 y" + 2y =0 in fortran

    Marrk44 I explain exactly what I want I have an ordinary differential equation of order two y "(x) = -2cos (2x) I am looking to solve numerically the RK4 method to write a program in FORTRAN with y (0) = 1 and y '(0) = 0 thank you very much
  4. mlouky

    Fortran I to solve ODE with rk4 y" + 2y =0 in fortran

    my ey is y"+2y weith y(x) = cos(2x) voila mon progam Program second_ordr implicit none integer, parameter :: n=21 ! number of base points double precision, external :: f double precision, dimension(1:n) :: x, y, dy ! x, y, y' integer i open (unit=22,file="result.dat") ! boundary values x(1)...
  5. mlouky

    Fortran I to solve ODE with rk4 y" + 2y =0 in fortran

    How can i solve y" + 2y =0 with RK4 and their program fortran please I néed your helpe
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