Questions tagged [expression-construction]
The expression-construction tag has no usage guidance.
108
questions
1
vote
2
answers
72
views
How to exclude singularities for `NMinimize`
I have an messy expression and want to apply NMinimize to it, have no idea how to force NMinimize to ignore the singularities it ...
- 336
0
votes
1
answer
78
views
How to modify the order of symbols to make the result look more well and use some fixed expression 1-q, 1-c-q and so on?
In most cases, my expressions are quite complex, like the following expr and expr2. How can I make them look better, for instance, I want to use expressions like 1-q or 1-c-q and so on.
- 169
2
votes
1
answer
43
views
Conversion of an expression to function yields Tag Plus in ... is Protected error
I'm trying to implement polynomial interpolation. My current implementation involves generating an expression that is the final equation that will be plotted. While plotting the function itself works ...
- 33
3
votes
2
answers
166
views
Precise control of fraction expression
It seems that expression for fraction differs
when the number of terms in the numerator is more than 2.
...
- 4,315
0
votes
2
answers
131
views
Elegant way to validate expression?
Suppose I'm using the expression Person[fn_String, ln_String] as a data expression, and want to prohibit the creation of expressions where ...
1
vote
1
answer
129
views
Fitting an inverse power law [closed]
Is there any reasonably fast way of finding a function of the type
that best fits a given data, for some K and n? For example, the following data closely follows an inverse power law
...
- 4,903
0
votes
1
answer
54
views
Generating a 2 variables polynomial with constraints
I would like to generate automatically a polynomial in two variables $(s,t)$ which is symmetric under the exchange of those variables. There are three kinds of terms; at order $k$, we have
$$(s+t)^k, \...
-1
votes
1
answer
51
views
Swap Composite Command Components
Let's take a composite Mathematica command:
A[B[]]
where A and B - two arbitrary ...
- 2,434
1
vote
1
answer
73
views
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
vote
1
answer
119
views
How to convert this Mathematica expression to another, as described here?
I am working on a function of which the core will consist of something like:
...
- 9,667
2
votes
0
answers
116
views
Store pattern names in variables, and use them in Condition (/;)
I am trying to create patterns whose form is not hard-coded, and which are not explicitly directly written. For that I want to use one list of pattern names to name some parts of a ...
- 483
0
votes
2
answers
63
views
How to turn FindFit result into function within a Module context
I'm trying to construct a 'normal' function (with formal parameter) from the FindFit result within a Module context.
While this works on a global level:
In :=
...
4
votes
1
answer
251
views
4
votes
1
answer
127
views
Alternatives in pure function construction
When I declare a function f in the following form:
f[a|b] := 1
then I can use it like:
...
- 343