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based on an earlier version of the Wolfram Language.
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WorkingPrecision

WorkingPrecision
is an option for various numerical operations which specifies how many digits of precision should be maintained in internal computations.
  • Setting WorkingPrecision->n causes all internal computations to be done to at most n-digit precision.
  • Setting WorkingPrecision->MachinePrecision causes all internal computations to be done with machine numbers.
  • Even if internal computations are done to n-digit precision, the final results you get may have much lower precision.
Find a root using 60-digit precision arithmetic:
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Solve a differential equation using 24-digit precision arithmetic:
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