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Accuracy

Accuracy[x]
gives the effective number of digits to the right of the decimal point in the number x.
  • Accuracy[x] gives a measure of the absolute uncertainty in the value of x.
  • Accuracy[x] does not normally yield an integer result, and need not be positive.
  • Numbers entered in the form digits``a are taken to have accuracy a.
  • If x is not a number, Accuracy[x] gives the minimum value of Accuracy for all the numbers that appear in x.  »
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