# All Questions

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### How to build a function object like the built-ins such as Interpolation?

There are many built-in functions that return a function object, such as Interpolation[], BSplineFunction[] ,...
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### Non-integral common denominator

I have a list r = {114.49, 311.876, 538.704} whose elements are multiples of a non-integer value. I want to find the common denominator ...
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### Weird variable report

All, What does this mean when it shows up in your notebook? ?f f Global CreateUUID["Info-"] False False False ?x x Global CreateUUID["Info-"] False False False What has happened? ...
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### Plotting issue for nonlinear de

The following code with varying scaling parameter gives same plot. plz suggest correction. ...
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### INSTALLING MATHEMATICA 10.2.0 in cygwin [on hold]

I have this program that I have installed in cygwin, which requires mathematica to execute part of its code. The problem is that I do not know how to install mathematica in cygwin directly. Can ...
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### What methods does Maximize use like $\mathtt{Maximize}\left[\left\{3 x^2+2 \sqrt{2} x y,x^4+y^4=1\right\},\{x,y\}\right]$

I used Maximize for the maximum value of $3 x^2+2 \sqrt{2} x y$ when $x^4+y^4=1$ , $x>0,y>0$. What methods does Maximize ...
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### prove that [d sigma k=0 of 2^k log (n/2^k)]= 2^d+1 log n/2^d-1 - 2 - logn [on hold]

Am trying to prove that [d sigma k=0 of 2^k log (n/2^k)]= 2^d+1 log n/2^d-1 - 2 - log n. i don't know how to go about it. any idea? i have tried to change the 2^k log (n/2^k) to 2^k log (n/2^k) ...
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### Cell >> Convert To >> Bitmap: FrontEndToken for a specific menu?

I've seen good discussions about and full list of FrontEndTokens. But I could not figure out how to find a specific FrontEndToken for an menu. I'd like to make a Button that does what Cell >> ...
79 views

### How to run Racket in Mathematica

My situation is that I write Racket/Scheme code to run some simulation. Then I'd like Mathematica to call Racket to run that code file. For example: the code file is named ...
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### Why the returned value is complex while my input is all real in Nminimize

This is the mathematica code I used. My goal is trying to solve eq2==0 && eq3==0 simultaneously in the region "-200 The FindRoot doesn't gives me quick answers. So I tried to use Nminimize ...
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### Errors in plotting regular function

Suppose we want to define Tanh-function via exponent: th[x_] := (1 - Exp[-2 x])/(1 + Exp[-2 x]); FullSimplify[th[x]] Out[13]= Tanh[x] Then we define new ...
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### Bifurcation diagram for 1D ising model

I'm new in Mathematica, I want to plot a bifurcation diagram for a complicated Ising system with dynamics that I'm working on, but to get familiar with how to perform it on Mathematica I wish to start ...
313 views

### Unique Element in List

I have a list a, and want to find out whether there is a unique element in the list. For instance a={x,y,z,y,x} has an unique ...
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### Monitor function doesn't show continious change of values

Mathematica version: 10.2 Monitor[i = 0; While[i < 100, Pause[0.1]; i++]; i, i] The above code is from the documentation of ...
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### How does RootLocusPlot handle TransferFunctionModel

I'd like to analyze the poles (denominator-roots) of a TransferFunctionModel, that was generated from a ...
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### Define multilinear operator

In Maple it is possible to define a multilinear, orderless operator with: define(A,'orderless',multilinear): I can't seem to find the equivalent in Mathematica. ...
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### Image transformation to break up connected components

I have a picture of a bunch of sphere, and I want to calculate the centroid of each sphere on the plane and generate the Voronoi diagram for it. But (1) In the picture the sphere are contacting each ...
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### Defining function [duplicate]

ver1 = 2 x verf[x_] := ver1 verf[3] Result : 2 x Expected Result : 6 In the above code ...
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### How can I make a Tribonacci sequence in the form of a list?

How can I make a Tribonacci sequence that is in listing form? it suppose to look like the Fibonacci sequence but I couldn't get ...
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### Differences in AbsoluteTiming for similar codes

Consider the two following codes with the same SeedRandom (which ensures the same set of random numbers) but different use of the ...
I have the following problem: I need to solve the equation: $$\frac{\cos\left(x\right)}{x^6} - \frac{6 \sin\left(x\right)}{x^7}==0$$ and I don't really remember how to do it symbolically. Some help ...