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PossibleZeroQ

PossibleZeroQ[expr]
gives True if basic symbolic and numerical methods suggest that expr has value zero, and gives False otherwise.
  • 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.
EXAMPLESCLOSE ALL
Basic Examples   (1)
Test whether a numeric expression is zero:
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Click for copyable input
Out[1]=
Test whether a symbolic expression is likely to be identically zero:
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Click for copyable input
Out[2]=
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