# All Questions

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### Evaluation leak from Dynamic in Button's action

a = 1; Button["Print", a++] Button["Print", Dynamic[a++]] Button["Print", Dynamic[a++];] Button["Print", {Dynamic[a++]}] Dynamic @ a The second ...
44 views

### 2 functions in a package for CDF, 1 is OK 2nd is not working [on hold]

I am developing a CDF application to teach me how to create CDF files. In this application I am taking numeric and symbolic integral of a function. I create package with two functions; 1-taking the ...
29 views

### Forcing evaluation of LinearSolve [closed]

I have a linear solve function: ls = LinearSolve[MatrixForm[Transpose[basisNScoeffs]]]; Which I then use to generate a table of solutions: ...
117 views

### How do i plot a conical spiral on top of a cone?

So i need plot a spiral from the top of a cone, can someone help me with my code i have made a similar thing for a cylinder, but there radius wasnt change and in this case i cant figure out how to ...
29 views

### Analogue maple's Digits Environment Variable [duplicate]

I want setup (in Mathematica) once and for all operations number of digits after decimal point, similar how it's done in maxima: ...
51 views

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### seach combinaisons of terms that equals a sum within a sequencial ordered linear values? [closed]

subset size k = 2 (can be > 2) Sum to find = 11 sequence : 1,2,3,4,5,6,7,8,9,10.. n => result of k-size [1,11] [2,9] [3,7] ....
73 views

### BarLegend problem when rescaling color of multiple vectorplot

I want to make multiple vector plot at same color scale with same BarLegend. Similar posts are (1), (2) I made a minimal example to show the problem I encountered ...
60 views

### Missing curves in a plot [closed]

I am trying to plot multiple curves for a particular parameter in a function S1, where the only variable is t and the rest are ...
110 views

### Conjugate[a/b + c/d]

Trying to obtain the result of Conjugate[a/b+c/d] only gives the same result. As such, I use Refine as: ...
41 views

### The function I defined is not giving any output [closed]

Could anyone tell me why the function I have defined is not giving any output? When I run it, gen is not showing any output. Thanks! ...
429 views

### Plot independent 2D graphs on walls of 3D Plot

Sorry, I know a lot of similar questions have been asked before, but I just can't find one that exactly describes my problem. How can I make the according 2D (marginal distribution) graphs appear on ...
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I want to find a numeric solution using Grad. With Solve, I get ...
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### Compute second functional derivative with VariationalD?

I have problems to compute the second functional derivative of a general function. The following lines generate the first derivative: ...
153 views

### Wrong limit: Limit[(1 + (-1)^n/n)^n, n -> Infinity]=1 (Mathematica 10.4 and W-Alpha)

Since $(1-\frac{1}{n})^n\to 1/e$ and $(1+1/n)^n\to e$, the sequence $(1+\frac{(-1)^n}{n})^n$ has no limit as $n\to\infty$, but has limits for odds and even numbers. If $n$ were taken to be real, there ...
72 views

### 3DPlot Rendering Artefacts (z-fighting)

I am trying to render a matrix as a depth map: ...
116 views

### Wave equation PDE with changing boundary condition

This is my first post here, normally with mathematica I will solve out the PDE using eigen function expansion or separation of variables and then model the solution in mathematica. However this time I ...
70 views

### Mapping over function's several parameters regions [closed]

About this post: Mapping multiple parameters of a function to specific values I wonder if the parameters a and b have ranges ...
69 views

### Wrong numerical results from LegendreP

{Cos[Pi/180] // N, LegendreP[46, 0.9998476951563913`], LegendreP[46, Cos[Pi/180]] // N} give ...
228 views

### Vastly incorrect answers obtained by increasing WorkingPrecision with modified Bessel functions

Bug introduced in 7.0 or earlier and persisting through 10.4.1 This is a follow-up to this question regarding numerical instabilities occurring with modified Bessel functions. In trying to explore ...