FindRoot::lstol

更多信息

  • This message is generated when the algorithm used by FindRoot does not find a root within the indicated number of iterations.
  • If a root exists, this error can often be corrected by giving better starting values, or by changing the values of the AccuracyGoal or MaxIterations options.
  • Off[message] switches off the message; On[message] switches it on. For example: Off[FindRoot::lstol].

范例

基本范例  (1)

The objective function does not have a real root:

The complex roots can be found by using complex starting values: