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NDSolve::ndsv NDSolveValue::ndsv ParametricNDSolve::ndsv ParametricNDSolveValue::ndsv NDSolve`Reinitialize::ndsv

NDSolve::ndsv NDSolveValue::ndsv ParametricNDSolve::ndsv ParametricNDSolveValue::ndsv NDSolve`Reinitialize::ndsv

Details

  • This message is generated when NDSolve is unable to solve the initial conditions to find a starting value in an initial value problem.
  • This message can be generated by a variety of errors in the specification of initial conditions.
  • Off[message] switches off the message; On[message] switches it on. For example: Off[NDSolve::ndsv].

Examples

Basic Examples  (1)

The given equation is not set up correctly:

Wolfram Language code: NDSolve[0.0005635632304299039 * psi[R] == (2 * Derivative[1][psi][R]) / R + Derivative[2][psi][R] && Derivative[1][psi][1] == 7.017487714753473 && psi[Infinity] == 0, psi, R]

A proper equation setup solves this equation:

Wolfram Language code: NDSolve[{0.0005635632304299039 * psi[R] == (2 * Derivative[1][psi][R]) / R + Derivative[2][psi][R], Derivative[1][psi][1] == 7.017487714753473, psi[1] == 0}, psi, {R, 1, 2}]