Wolfram Language & System 10.4 (2016)|Legacy Documentation

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gives True if basic symbolic and numerical methods suggest that expr has value zero, and gives False otherwise.

Details and OptionsDetails and Options

  • The general problem of determining whether an expression has value zero is undecidable; PossibleZeroQ provides a quick but not always accurate test.
  • With the setting Method->"ExactAlgebraics", PossibleZeroQ will use exact guaranteed methods in the case of explicit algebraic numbers.
Introduced in 2007