Questions tagged [example]
Questions asking for an example to be provided, or asking for help understanding examples.
11
questions
1
vote
0
answers
80
views
Feynman amplitude calculation for a Feynman diagram of gravitons in xAct
Any tutorial example how to calculate Feynman rules from a Lagrangian of gravitons in xAct and how to implement it for calculating its Feynman amplitude for a given diagram involving gravitons in xAct?...
- 29
1
vote
1
answer
172
views
Need to find a unique mathematical expression (not in documentation) that is as short as possible but takes a good amount of time to evaluate
I am writing a public ResourceFunction and I need a good clever use case that should not appear to emulate any examples in the official documentation but will ...
- 2,467
-1
votes
1
answer
141
views
Examples in Mathematica official site can't run in Mathematica 13.0 [closed]
I see this example in the website
Solve[a x + y == 7 && b x - y == 1, {x, y}]
But in my computer, the result is
The code is:
...
- 567
5
votes
2
answers
168
views
3
votes
0
answers
83
views
Where can I get a medium-sized project case completed with Mathematica? [closed]
I have been using Mathematica for a while, and I have mastered basic grammar. At present, I want to solve some small and medium-sized engineering problems with Mathematica, and I want to know where to ...
4
votes
1
answer
108
views
How to find all "Featured examples" in the documentation?
How can I find all "Featured examples" in the documentation ? They are not neatly listed nor can they be simply searched using keywords.
I thought this had been asked before , but I cannot find the ...
- 5,290
8
votes
1
answer
444
views
Is Wolfram's example of solving PDEs in 3D inconsistent?
I am slightly puzzled over the example "Solve PDEs over 3D Regions" provided by Wolfram. The example shows how to solve Laplace's equation over a space shuttle mesh. However, if I run the code in 11.0....
- 1,981
2
votes
0
answers
235
views
Examples of a large Mathematica construction? [duplicate]
I'm pretty new to Mathematica, and in trying to find examples of good Mathematica programming, it always seems that solutions to a problem can be solved with hardly any lines of code. Of course this ...
- 415
0
votes
2
answers
2k
views
How can I use NonlinearModelFit with multiple variables? [closed]
I am trying to find the coefficients for following equation:
$\quad \quad f(x,\,y,\,z) = a (x^2)\, exp(b x + y^2) + c z^2 y$
using NonlinearModelFit. But I can't ...
- 121
4
votes
0
answers
269
views
Something like MATLAB Cody for Mathematica? (Learning through exercises.)
At some rainy days, when I realise again the TV program is getting worse and worse ... I visit Cody:
Cody™ is a MATLAB Central game that challenges and expands your
knowledge of MATLAB. As a web ...
- 1,623
3
votes
1
answer
164
views
What is happening in Map[Function[x, x^2], a + b + c] from the Pure Function tutorial
The Pure Function tutorial gives an example: Map[Function[x, x^2], a + b + c].
I would expect the output to be (a + b + c)^2, ...
- 470