MathGroup Archive 1997

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problems with precision


I am a french student doing a trainee on mathematica. There is another
team having the same project as I have but it's working with Maple.
We had to calculate with high accuracy (more than 20 digits) the solution
of a 2 dimensional non-linear system. The problem to solve was very easy.
But Maple and Mathematica agreed only on the 15 first digits. I used the
function SetPrecision. Is there another function to set calculus precision

Here is the listing of my routine in Mathematica :

, {p, 1, 20, 1}]


ListPlot[{x, y} /. rr]

r={x, y} /. rr;

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