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NDSolve::pdord NDSolveValue::pdord ParametricNDSolve::pdord ParametricNDSolveValue::pdord

NDSolve::pdord NDSolveValue::pdord ParametricNDSolve::pdord ParametricNDSolveValue::pdord

Details

  • This message is generated when the equations do not include derivatives of one or more of the functions specified in the second argument of NDSolve.
  • This message does not necessarily indicate an error.
  • Off[message] switches off the message; On[message] switches it on. For example: Off[NDSolve::pdord].

Examples

Basic Examples  (2)

A warning message is generated because there are no derivatives of y[t] in the equations:

Here, λ[t] appears with no derivative. Therefore, the equations will be solved as a differential-algebraic equation. The message is just a warning: