This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
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# \$MaxExtraPrecision

 \$MaxExtraPrecisiongives the maximum number of extra digits of precision to be used in functions such as N.
• \$MaxExtraPrecision is used implicitly in various exact numerical computations, including equality tests, comparisons, and functions such as Round and Sign.
Allow up to 1000 digits of extra precision to complete a numerical approximation:
Allow up to 1000 digits of extra precision to complete a numerical approximation:
 Out[1]=
 Scope   (2)
Allow as much extra precision as possible:
The default of 50 is not sufficient for some calculations:
The result does not have the requested precision:
Often raising \$MaxExtraPrecision by just over the precision deficit will be sufficient:
For hidden zeros, rasing \$MaxExtraPrecision will not help:
Allowing unlimited extra precision can lead to running out of memory:
Relative error measured by Precision is not defined at zero, so use Accuracy as a goal:
Symbolic simplification may resolve the dilemma conclusively:
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