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 4h revised Counter example for uniqueness of second order differential equation added 142 characters in body 2d revised Counter example for uniqueness of second order differential equation added 318 characters in body 2d comment Counter example for uniqueness of second order differential equation @Santiago, I see your point and completely agree with the example. 2d asked Counter example for uniqueness of second order differential equation Apr 20 accepted Finding family of curve for given asymptotes Feb 11 revised double integral equal to modified Bessel function corrected definition of bessel function and Integral Feb 11 suggested approved edit on double integral equal to modified Bessel function Feb 8 awarded Teacher Feb 6 revised Green's function in a moving frame for a constant heat source deleted 2 characters in body; edited tags Feb 5 comment 1D Green's function: from interval to infinite line @O.L., please look this math.stackexchange.com/questions/1135311/… Feb 5 asked Green's function in a moving frame for a constant heat source Nov 25 accepted solvability condition for differential operator Nov 25 comment solvability condition for differential operator @TZakrevskiy, from your comment now I understand what is meaning of self-adjoint differential operator. Honestly I could not understand answer given by you at all because my ineptness in this field. Anyway thanks for your answer and explanation..! Nov 25 answered solvability condition for differential operator Nov 24 revised solvability condition for differential operator edited tags Nov 24 revised solvability condition for differential operator deleted 6 characters in body Nov 24 asked solvability condition for differential operator Oct 1 comment finding a parameter to match the solution asymptotically @JuliánAguirre, If I solve the equation with boundary conditions $y'(-3) =0$ and $y'(3) = 1$ in Mathematica, fine tuning of parameter $b$ shows that, I can make $y(-3)$ as small as possible. But if I start with boundary conditions $y'(-3) =0$ and $y(-3) = 0$, Mathematica declares problem as ill conditioned. Oct 1 comment finding a parameter to match the solution asymptotically @JuliánAguirre, that x axis is an asymptote to y(x) as x tend to -3. Oct 1 asked finding a parameter to match the solution asymptotically