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Re: htird order boundary values problem
Posted:
Nov 5, 2013 6:36 AM


> Hi everyone, I'm trying to solve in matlab a third > order BVP with non constant coefficents into the > closed domain [a, b]; > > y''' = cost  (1/x)*y'' + (1/x^2)*y' > > y=f(x) > > with this Boundary conditions. > > x=a : y=0; y'=0; > > x=b : y=0; > > i cannot find any way to do it... > i've tried both ODE or BVP but i can't manage to > solve it... does someone have any idea in which is > the path to follow?
Use BVP4C after rewriting your system as a firstorder system: y1'(x) = y2(x) y2'(x) = y3(x) y3'(x) = cost  1/x*y3(x) +1/x^2*y2(x) with boundary conditions y1(a)=y2(a)=y1(b)=0.
Best wishes Torsten.



