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 Author Comment/Response Ed 02/21/05 7:22pm I get the following error message when using NDSolve: NDSolve::dvnoarg: The function t appears with no arguments. I am attempting to solve this differential equation: \!\(NDSolve[{r\ \((\(\(12.055116029577436`\)\(\[InvisibleSpace]\)\) - \ 0.004991840209429083`\ t[r] + 7.355780192195863`*^-7\ t[r]\^2 - 4.745507783827941`*^-11\ t[r]\^3 + 1.4176645809354309`*^-15\ \ t[r]\^4 - 1.5908389239367406`*^-20\ t[r]\^5)\)\ ?\_r Dt[t, r] + \ \((\(\(12.055116029577436`\)\(\[InvisibleSpace]\)\) - 0.004991840209429083`\ \ t + 7.355780192195863`*^-7\ t[r]\^2 - 4.745507783827941`*^-11\ t[r]\^3 + 1.4176645809354309`*^-15\ t[r]\^4 - 1.5908389239367406`*^-20\ \ t[r]\^5)\)\ Dt[t, r] == \(-2200\)\ r\ \((\(\(7897.9891397366055`\)\(\ \[InvisibleSpace]\)\) - 3.4314940084387255`\ t[r] + 0.00046455776424968897`\ t[r]\^2 - 2.0274932990451966`*^-8\ t[r]\^3 + 2.9610596390547743`*^-13\ \ t[r]\^4)\), t[0] == 8100}, t, {r, 0.0001, 0.005}]\) I would really appreciate any suggestions. Thanks. Attachment: NDSolve.tiff, URL: ,

 Subject (listing for 'NDSolve Problems') Author Date Posted NDSolve Problems Ed 02/21/05 7:22pm Re: NDSolve Problems wole 02/25/05 10:55pm
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