Recent content by SHmech

  1. S

    Numerical solution of an ODE be Singular at endpoint

    My fault. i checked the simplified form of the eqution \frac{\mathrm{d}^{2}\phi}{\mathrm{d}x^{2}}+ab\phi=0 to get guess values of \phi and it works with two Newmann B.C.s so i think it is the same with the original equation... if we substitute \phi(x)=f(x)+C1 into the original equation it can...
  2. S

    Numerical solution of an ODE be Singular at endpoint

    Hi all, I have an ODE with the form \frac{\mathrm{d}^{2}\phi}{\mathrm{d}x^{2}}+a\exp(b\phi)=0 B.C. \frac{\mathrm{d}\phi}{\mathrm{d}{x}}\right|_{x=0}=-c,\frac{\mathrm{d}\phi}{\mathrm{d}{x}}\right|_{x=L}=0 where a,b,c,L are all positive. I solved the problem with Maple using the dsolve...
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