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Hallo Frank,
nur zum Sagen, eine ordentliche Optionensuchmethode
In[57]:= Options[
ToExpression[
Flatten[StringCases[Names["NDSolve`*"], __~~"BDF"]][[1]]]]
Out[57]= {"ImplicitSolver" -> NDSolve`Newton,
"MaxDifferenceOrder" -> 5, "VariableStepCoefficients" -> Automatic}
oder
In[55]:= Options[NDSolve`BDF]
Out[55]= {"ImplicitSolver" -> NDSolve`Newton,
"MaxDifferenceOrder" -> 5, "VariableStepCoefficients" -> Automatic}
Gruss
Udo.
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