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DSolve::der1 NDSolve::der1 NDSolveValue::der1 ParametricNDSolve::der1 ParametricNDSolveValue::der1

DSolve::der1 NDSolve::der1 NDSolveValue::der1 ParametricNDSolve::der1 ParametricNDSolveValue::der1

Details

  • This message is generated by an invalid Derivative expression in the first argument of DSolve or NDSolve.
  • Off[message] switches off the message; On[message] switches it on. For example: Off[DSolve::der1].

Examples

Basic Examples  (1)

An error occurs because Derivative[1][f, g][x] shows differentiation of both f and g:

Wolfram Language code: NDSolve[{Derivative[1][f, g][x] == f[x], g'[x] == g[x], f[0] == g[0] == 1}, {f, g}, {x, 0, 1}]

This shows a valid input to NDSolve:

Wolfram Language code: NDSolve[{Derivative[1][f][x] == f[x], g'[x] == g[x], f[0] == g[0] == 1}, {f, g}, {x, 0, 1}]