Developer`
Developer`

ZeroQ

As of Version 6.0, ZeroQ has been superseded by PossibleZeroQ.

ZeroQ[expr]

returns True if built‐in transformations allow it to be determined that expr is numerically equal to zero, and returns False otherwise.

更多信息和选项

  • To use ZeroQ, you first need to load the Developer Utilities Package using Needs["Developer`"].
  • ZeroQ uses a combination of symbolic transformations and randomized numerical evaluation.
  • If ZeroQ[expr] returns False it does not necessarily mean that expr is mathematically not equal to zero; all it means is that built‐in transformations did not allow this to be determined.