Linked Questions

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0answers
341 views

What is the meaning of //N in mathematica? [duplicate]

As the title says, What is the meaning of //N? i can't remember it.I tried looking in documentaion center, but it came up with nothing. Help appreciated.
0
votes
1answer
329 views

ListPlot[Transpose[{xx,yy}]] returns blank plot [duplicate]

This is complete mystery for me, but I am unable to plot the following data... I have two lists, that I want to ListPlot. The data is created in the following way (I edited the code for more clarity): ...
0
votes
1answer
277 views

Using numerical value of Solve [duplicate]

Suppose I solve an equation y=Solve[x+3==8,x] and I want to get the numerical value of y, how do I do that? I mean, if I want to work with my result and evaluate, for example y-2 it will not work, ...
0
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0answers
261 views

solving singular matrix [duplicate]

Hello I have a matrix that is singular, and i wanted to use linear solve to solve it but that doesn't work with mathematica. The matrix given as a list looks like this: ...
3
votes
1answer
74 views

Prevent MMA from saving results in Out[] [duplicate]

MMA automatically saves every result which then can be called via Out[] where the argument needs to be given as %n and ...
0
votes
1answer
192 views

Function to find minimum element in array [duplicate]

i have this code: ...
1
vote
3answers
89 views

Problem while adding elements to list in while function [duplicate]

I'm tring to write a little bit of code that adds a missing element to a list. In specific: given a numbered data set such as: ...
2
votes
1answer
114 views

What Mathematica means by Hashtag? [duplicate]

I am somehow confused. What Mathematica means by hashtag within the result for my differential equation? ...
2
votes
2answers
105 views

Adding a tree to a list of trees within a loop [duplicate]

I'm trying to write a function which for a list of trees checks if a given tree is isomorphic with any of the listed, and if not - adds it to the list. I tried to use both ...
0
votes
0answers
221 views

Is it possible to change default $HistoryLength [duplicate]

By default $HistoryLength is set to \[Infinity]. This is often unnecessary and can cause unecessary memory usage. I can of ...
2
votes
1answer
133 views

How to write this code as a pure function? [duplicate]

The code has three places with same variable ls. So I think it would be possible to write it as a pure function. ...
0
votes
0answers
218 views

How to remove arrows and brackets from this list with [duplicate]

I have some lists which have many brackets. I'd like to remove arrows from the lists. For example, I need to change the list ...
0
votes
0answers
198 views

Assigning the answer of Solve to a variable [duplicate]

If I enter Solve[(x-2)(x+2)==0,x] then the answer comes up as {{x -> 2}, {x -> -2}} I want to make two variables ...
0
votes
1answer
116 views

Minimizing a function which involves Maximize [duplicate]

I have a mathematical function: $f = \frac{c^3}{2 a (k T)^3} \sqrt{\frac{\pi u v w}{2 b}} \exp \left[ - \frac{c}{k T} \sqrt{\frac{x^2+y^2}{a}+\frac{z^2}{b}} + \frac{1}{2} \left( \frac{x^2}{u} + \frac{...
0
votes
1answer
180 views

Problems with NMaximize [duplicate]

The Objective function I would like to Maximize takes less than a second to evaluate. There are several packages needed to evaluate it, so I'm not showing it here. ...

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