Math 3.0 running but 4.0 little problem.
- To: mathgroup at smc.vnet.net
- Subject: [mg35993] Math 3.0 running but 4.0 little problem.
- From: Sergio Milo <milo at dmo.fee.unicamp.br>
- Date: Sun, 11 Aug 2002 05:13:54 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Hello Math Group.
Anybody can help me?
I have any program in Mathematica 3.0, I am changing to Mathematica 4.0,
but I have problem in this point, with NDSolve in this equation
\!\(\*
RowBox[{
RowBox[{"EXERUIDO", "=",
RowBox[{"NDSolve", "[",
RowBox[{
RowBox[{"{",
RowBox[{
RowBox[{
RowBox[{
SuperscriptBox["y", "\[Prime]",
MultilineFunction->None], "[", "x", "]"}], "==",
\(\(coefac[x]\ \((1 - alfaam\/alfaem)\) +
alfaam\ etas\)\/\(y[x] /. sinalfinal\)\)}], ",",
\(y[0] == 0\)}], "}"}], ",", "y", ",", \({x, 0, Z}\)}],
"]"}]}], ";"}]\)
NDSolve::"ndnum":
"Encountered non-numerical value for a derivative at \!\(x\) == \
\!\(0.`\)."
NDSolve::"ndnum":
"Encountered non-numerical value for a derivative at \!\(x\) == \
\!\(0.`\)."
In Mathematica 3.0 resolve this equation without problem.
I dont know what can I do to resolve this problem.
Thank for advance.
Sérgio Milo