Tagged Questions
8
votes
4answers
197 views
Transform a list of functions to a composition
How do I apply a list of functions in a nested way?
Example:
functionList = {f1,f2,f3}
RequiredCommand[functionList,Pi]
such that the required command returns
...
0
votes
1answer
191 views
How can I define a Step-Wise function in Mathematica (Not using Heaviside Step Function)? [closed]
I need to define a function, which has very different behaviour in different regions. There are about 13 different regions. A sample of my function is the foloowing table:
I want to define it as a ...
2
votes
0answers
60 views
From notebook,how can I change variable value with in .m file dynamically?
I wrote a function named Testing.
...
4
votes
6answers
172 views
Filter list with different list in it
I have a list like:
{{{4, 14}, 1}, {{4, 15}, 1}, {{4, 16}, 1}, {{4, 17}, 1},
{{4, 18}, 1}, {{4, 14}, 3}, {4,15}, {{4, 16}, 2},{4,18}}
Now I want to ...
2
votes
0answers
76 views
Evaluating a function on permutations of its arguments
Say I have a function "temp" of $n+1$ variables, $y,z1,z2,z3,...,zn$. I want to test if my function has certain symmetries like swapping $y$ with square of any $z$, swapping any two of the zs, ...
2
votes
1answer
119 views
#[[1]]//FullForm = 1?
I have a set of symbolic algebraic expressions that I'm trying to get some speed into. To illustrate the issue, I'll use a simple form like { k0 X, k1 Y, k1 Z}, ...
4
votes
3answers
278 views
1
vote
2answers
101 views
How can define a set of nested parameters
I would like to know how I to define a function with a nested set of parameters (or whatever you would like to call it). For example, how would I get the following function ...
0
votes
2answers
112 views
About minimizing calculations when using ComposeList
I have a lot of functions to use in a iterative way, and I need some of the calculation results. For example:
...
6
votes
5answers
214 views
How to nest my own “times” function to get powers
I have a "times" function. I'd like to create a power function using it. It should look like this for an 6th power:
...
2
votes
3answers
137 views
Using Nest inside NestList
I need results like this:
{Cos[Cos[x]], Sin[Cos[Cos[x]]],Cos[Cos[Sin[Cos[Cos[x]]]]],
Sin[Cos[Cos[Sin[Cos[Cos[x]]]]]], ... }
I've tried to use ...
13
votes
3answers
186 views
How to keep some of the results of the NestList
I'm using some iterative arithmetics to calculate wave propagation with the help of NestList. I have to use a small step size for iteration to guarantee the accuracy, which lead to too much data (e.g, ...
2
votes
3answers
151 views
Ways to change an explicit function into a pure function
I'm trying to use FixedPoint to solve a transcendental equations, but the first argument of the FixedPoint should be a pure ...
13
votes
3answers
480 views
Can someone explain this snippet: (#[#] &)[#[#][#] &]
A friend showed me this snippet of code today:
(#[#] &)[#[#][#] &]
I can sort of see that we're constructing an anonymous function that takes a function ...
