Mathematica 9 is now available
SEARCH MATHEMATICA 8 DOCUMENTATION
THIS IS DOCUMENTATION FOR AN OBSOLETE PRODUCT.
SEE THE DOCUMENTATION CENTER FOR THE LATEST INFORMATION.
Mathematica > Precision & Accuracy Control >
Built-in Mathematica SymbolTutorials »|See Also »|More About »

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.
EXAMPLESCLOSE ALL
Basic Examples   (2)
Find a root using 60-digit precision arithmetic:
In[1]:=
Click for copyable input
Out[1]=
 
Solve a differential equation using 24-digit precision arithmetic:
In[1]:=
Click for copyable input
Out[1]=
In[2]:=
Click for copyable input
Out[2]=
New in 1 | Last modified in 5
© 2013 Wolfram Research, Inc. Japanese
Ask a question about this page  |  Suggest an improvement  |  Leave a message for the team