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 Jul 2 comment Setting the Accuracy of calculations Initially, I used the backtick for floating point values as well(I read about in Mathematical Cookbook), though it becomes somewhat cumbersome within long equation. Jul 2 awarded Commentator Jul 2 comment Setting the Accuracy of calculations Thanks, I understood the SetAccuracy and // Accuracy Jul 1 comment Setting the Accuracy of calculations In[8]:= z[SetAccuracy[20., 200], SetAccuracy[20., 200]] // Accuracy Out[8]= 13.6508 Don't think it worked. Jul 1 comment Setting the Accuracy of calculations I am aware that Mathematica will give me exact values for integer & rational calculations, but my calculations are far from exact. Jul 1 asked Setting the Accuracy of calculations Jun 28 awarded Quorum Jun 25 comment SetPrecision within Block why is Precision[SetPrecision[Sqrt[2], 4]] results in precision different than 4 ??? Jun 25 awarded Student Jun 25 revised SetPrecision within Block added 3 characters in body Jun 25 asked SetPrecision within Block Jun 20 accepted Unexpected result of summation Jun 18 comment Unexpected result of summation I have too admit, it look very cool, and probably works way better than my version, but way out of my league. Though, I will browse through docs to find out out what code does. Thanks ! Jun 18 comment Unexpected result of summation Thanks you for the answer !!! Jun 18 comment Unexpected result of summation for one thing, b.gatessucks missed the (b - a)/2*. Still, it is a good result Jun 18 awarded Editor Jun 18 revised Unexpected result of summation added 64 characters in body Jun 18 asked Unexpected result of summation Jun 11 comment Creating simple procedure for The Least-Square $m^\text{th}$ Degree Polynomials Thank you for taking time to write this extensive answer! Jun 11 awarded Scholar