# All Questions

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### Is there a built-in function for this?

In the interest of better controlling the organisation of arbitrarily complex list/array/etc. structures, I created a simple function $\{a\}\mapsto a$. It is distinct from ...
6 views

### Why free form does not shows exact code?

I am reading "Hands-On Start to Wolfram Mathematica: And Programming with the Wolfram Language 2nd. Edition". Here at page 12 there is an example to in put in free form (...
6 views

### Iverse function of output of NDSolve

I am solving an ODE of the form f'[t]=func[f] to some initial condition with NDSolve, and obtain a solution for ...
10 views

### Possible bug in version 12 in solving the eigensystem

I would like to report a possible bug in solving the eigensystem, at least for certain matrix. I use version 12 in mac. I will attach the minimal working example below. Excuse me for the improper ...
8 views

### Trying to Plot a function and not getting an output

I've been using this to plot the function. Can someone tell me what im doing wrong? Plot[1/(-1+(e^CubeRoot[x]),{x,0,1}]
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45 views

### Numerically solving an algebraic equation

I have asked a similar question earlier, but I am still stuck at the same problem. I would like to solve an algebraic equation of the form ...
16 views

### How to specify continuous color spectrum in a custom BarLegend?

I want to create a custom BarLegend with continuous colors: ...
25 views

### Can I change a Presentation to notebook again?

Recently I created a notebook in Mathematica 12 and I wanted to make a presentation of it, so I converted to a Presentation, like follows: Format-> StyleSheet-> PresenterTools->Facet That is ok and I ...
67 views

### Pattern matching natural powers as products

I thought that Mathematica would be smart enough to know that f[t]^2 should match a_ * b_ with ...
44 views

### Slicing a List density plot

I am using the following code to obtain a list density plot: ...
46 views

### How to solve this function equation

I can solve the function equation $f(f(x))=x$ with the following code: WolframAlpha["solve f(f(x))=x", {{"SolutionAsAFunctionalEquation", 1}, "Content"}] But ...
23 views

### How can I enforce the recurrence relations of SphericalHarmonics?

Spherical harmonics satisfy a number of recurrence relations as reported here. How can I enforce them in order to simplify a complicated relation like this one: ...
8 views

### Cannot launch Chrome or Firefox Driver with StartWebSessions[]

The Mathematica 12 in my computer cannot launch Chrome or Firefox session correctly. The first error message is ...
64 views

### Write the code to display a given plot [closed]

Write the code to display the exact image shown above.
122 views

### How to control render order of Graphics3D to prevent or encourage overlap?

I make my graphics in Mathematica using the Wolfram Language. This works quite well, but I have run into an issue that will make it work much nicer if it is solved. In the following code, I render ...
46 views

### Need help in finding intersection point of two function in Block environments

Consider the following model, u[x1_, y1_] :=Block[{x = x1, y = y1}, ODE f = Sin[c x + y]; g=(c 5 y + 2)/(x + 2);s1 = Solve[{f == g}];{s1}] and then call the <...
30 views

### Need help plotting on Mathematica simple piecewise wave function from quantum physics (Quantum Physics, Griffiths, 2.7)

On Mathematica need to plot an initial wave function defined as... Psi(x,0) = Ax when 0 <= x <= a/2 Psi(x,0) = A(a - x) when a/2 <= x <= a Here is my attempted code... ...
36 views

### First Neighbors in a DiskMatrix

I have the next array: DeleteCases[DiskMatrix[radius], 0, {2}] And I would like to have access to each element first neighbors. How can I have access to those ...
79 views

### Merge list repeating elements

Suppose I have a list with mixed elements {{{a,b},{c,d}},{{e,f},{h,i}}} Is there a way so that I can reshuffle the elements to get the following? ...
49 views