The precision tag has no wiki summary.
1
vote
1answer
85 views
Output precision
I've solved some equations using FindRoot and then computed some values. Now when I print the output, I only get a certain precision
{{0.01, 496.983, 61.3147, ...
0
votes
2answers
73 views
Problem with working precision
I have tried to resolve the problem of the following link How can I solve precision problem
I can tell the problem described in that link shortly here, It's no mater how many precision is there after ...
0
votes
0answers
23 views
What is the precision of this number? [duplicate]
In a matrix evaluation, I got the following number.
2.8330574963868513`
I understand that the number after ` shows the precision of the output number. But this ...
4
votes
1answer
65 views
Padding plot ticks with zeros on the right
I would like to know how can I make a real-valued plot tick pad with a zero to the right of the decimal point on integer values. This is what I have:
...
2
votes
1answer
70 views
Numerical Error with Large Matrices
I am writing a Finite Element Analysis program in Mathematica. The code involves handling a large matrix with large entries. I get an error when I try to use Mathematica's "LinearSolve" to solve a ...
2
votes
5answers
410 views
Why is this Mandelbrot set's implementation infeasible: takes a massive amount of time to do? [closed]
The Mandelbrot set is defined by complex numbers such as $z=z^2+c$ where $z_0=0$ for the initial point and $c\in\mathbb C$. The numbers grow very fast in the iteration.
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6
votes
2answers
137 views
4
votes
1answer
100 views
How to find derivative of a numerical solution, where precision is ambiguous?
I am trying to take the derivative of a numerical solution. I am concerned that the way I'm doing this may be problematic due to numerical error; I think there must be a better way but I'm not very ...
2
votes
2answers
187 views
Problem with setting working precision in NIntegrate
I want to obtain a good numerical approximation (up to 10 decimal place would be ok for me) to an integral:
$$
\int^{\infty}_{0} f(r)r^2dr
$$
I am using the function $f(r)$, which is related to the ...
1
vote
1answer
141 views
Export image data precision
I'm sure there is a very easy way to control this, but I have been searching for an hour now without luck.
I plot a function and export it to get a table that I can use in TikZ.
...
1
vote
1answer
138 views
ParallelTable and Precision
I'm using ParallelTable[] to calculate a function over a range of my parameters , ($\omega,\ell$). This seems to be working well (in terms of speed increase) except ...
6
votes
3answers
360 views
Strategies to solve an oscillatory integrand only known numerically
I have an integrand that looks like this:
the details of computation are complicated but I only know the integrand numerically (I use NDSolve to solve second ...
6
votes
1answer
148 views
Confused by (apparent) inconsistent precision
$$ e^{\pi \sqrt{163}} \approx 262537412640768743.99999999999925 $$
E^(Pi Sqrt[163.0])
N[E^(Pi Sqrt[163.0]), 35]
NumberForm[E^(Pi Sqrt[163.]), 35]
returns
...
