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DSolve::litarg NDSolve::litarg NDSolveValue::litarg ParametricNDSolve::litarg ParametricNDSolveValue::litarg RSolve::litarg

DSolve::litarg NDSolve::litarg NDSolveValue::litarg ParametricNDSolve::litarg ParametricNDSolveValue::litarg RSolve::litarg

更多信息

  • This message is generated when the independent variables are not specified with consistent names and positions.
  • Off[message] switches off the message; On[message] switches it on. For example: Off[DSolve::litarg].

范例

基本范例  (1)

One of the boundary conditions is not given directly as a function of the variables:

Wolfram Language code: NDSolve[{Derivative[2, 0][f][x, t] == Derivative[0, 2][f][x, t], Derivative[0, 1][f][x, 0] == 0, f[0, 2t] == 0, f[1, t] == 0, f[x, 0] == x(1 - x)}, f, {x, 0, 1}, {t, 0, 1}]