0
votes
0answers
21 views

the default option of NDSolve

How should I find out what the default value of Accuracy and Precision is in the NDSolve? I have a pde that when I asked it to solve for me the equation with a special Accuracy and precision it gave ...
1
vote
1answer
60 views

Inaccuracy of Piecewise function? [duplicate]

I have the following issue and can't find a solution so far. ...
3
votes
0answers
87 views

Tools for Stability/Automatic Error Analysis in Mathematica

I have a longer analytic expression in several variables containing special functions and others. Does Mathematica bring tools - or are there any packages - to examine the stability when I evaluate ...
6
votes
0answers
58 views

Is there a way to get BSplineFunction beyond MachinePrecision?

I have been using BSplineFunction (Mathematica 8) to generate a smooth representation of some data, which I might then do some further processing on. As I ...
6
votes
2answers
145 views

Large Number times Tiny Number

A (maybe noob) question: Let a = 1234567891234567889998.5 b = 1234567891234567889999.5 Mathematica (v8) yields for ...
6
votes
2answers
263 views

Cannot Get Numerical Results to Match

I try this numerical summation (in two parts) ...