# All Questions

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14 views

### Unexpected CountourPlot behavior at corners

With Mma 12.0 on Win 10, I'm seeing an unexpected white line in the following ContourPlot. ...
32 views

### Removing Duplicates in List of Lists

I have in Mathematica a list of lists like this: ...
23 views

In this question we learn that we can use FindFile to get the disk location of a package. However, I have some packages that are installed into my ...
25 views

### Mathematica Error Message Help [duplicate]

when using NMaximize[], I keep getting the following error message: Can someone please explain what <<99>> + <<86>> = 0 means?
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### How can I generate a Poisson gap sampled list?

tstart = 0; tend = 3; num = 1024; tstep = (tend - tstart)/(num - 1); list = Table[i, {i, tstart, tend, tstep}] // N; Histogram[list] I have a list of 1024 points ...
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### Bivariate Gaussian Distribution [on hold]

The bivariate Gaussian curve appears as a mountain. I was just looking at it and then a thought came to my mind, Are there any points inside the mountain/3d object(Obviously we cannot see them) or all ...
22 views

### How to train custom objects using YOLO in Mathematica?

I want to train few custom object using YOLO V2 architecture but not sure how to do this. I know that with the NetTake and NetReplace, this is achievable. Can someone point out me in the right ...
35 views

### what code do I need to use for a step by step Gaussian eliminations and Cramer's Rule, with a 21x21 matrix?

I am trying to show step by step calculations by using mathematica calling wolfram alpha API and for some reason its interpreting as one number. There are do matrices, matrix a is for the variable ...
28 views

### How I can obtain u and z?

Integrate[1/Sqrt(2*Cosh[y] - 2*Cosh[u]) , {y, z, u}] == 0.013 2*Cosh[z] - 2*Cosh[u] == 0.41 Can I obtain the parameters of u and z using above equations?
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### Printing Values Within a Function

Below is a function to calculate the overlap between two gaussian functions. ...
41 views

### Hammer projection to rectangular

This might be more of a mathematical problem than a Mathematica'l one, but still, maybe you'd help me. I want to write a function that would produce a rectangular image from an image with Hammer ...
30 views

### How to return the equal points between two lists

I have something like this ...
25 views

### How to make a StyleSheet with certain text in some cell types like Subsection, Subsubsection and alike?

I am modifying several StyleSheets to adapt them to convenient use at school. Now I am working on the StyleSheet for Mathematics classes. I would like to make several types of default headings on the ...
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### How to make a StyleSheet with a custom-defined Cell type that will be open by default?

I am making a StyleSheet to conveniently use them for homeworks and class works in Mathematics classes. I base it on the JournalArticle StyleSheet. I would like to make it such that by Default opens ...
35 views

### probability of one sum greater than another sum [migrated]

There are two group of competitors, say, group A and group B. the members in group A are denoted as a1, a2, …, ai,.., aN; The members in group B are denoted as b1, b2, …, bi, …bN. Each member in ...
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### Map list of functions over list of inputs

Given a list of functions {f1, f2, f3, ...} and list of inputs {1, 2, 3, ...} I wish to produce the list ...
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### Difficult Eigenvalue Problem

I have an eigenvalue problem of the form: f''(x)+V(x,lambda)f(x)=0 with Dirichlet boundary conditions: f(a)=A f(b)=B The eigenvalues lambda are complex, so they have both a real and imaginary part. ...
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### Nesting, Manipulate and TabView

I have a Demonstration that employs TabView to show three related but slightly different functions, each view having slightly different controls. I can make it work fine nesting Manipulate in each Tab ...
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### How to find the Maximal Absolute Error?

I found this fit but I do not understand how to find the maximal absolute error nor do I understand what it is really. I do not see what it is I would compare, would it be ...
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### Is it possible to speed up SDE simulation?

Is it possible to speed up SDE simulation in Mathematica? I am simulating a large number of Heston processes that look like the following (note this code is only a slight modification of the ...
102 views

### N body simulation

Im trying to solve a 3 body problem consisting of the earth moon and sun. I'm wanting to show the earth orbiting the sun and the moon orbiting the earth as a result of the gravitational forces. Where ...
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### ListDensityPlot and DensityPlot do not give the same results?

I am plotting the same function using ListDensityPlot and DensityPlot but the output is different! There are some points where ...
71 views

### How to solve transient 3D heat equation with robin boundary conditions

Good afternoon! I'm trying to solve the following heat equation: with the following boundary conditions and initial value: Nut I'm getting error while solving it with NDSolve: ...
50 views

### Formatting in *.m file

I have my own package (just a bunch of functions) in the *.m file, which I load using the Needs[] command. Everything works fine ...
61 views

### Labeling a plot point under the axis

This works well: Plot[x, {x, 0, 1}, Epilog -> Text[1/2, {1/2, 0.1}]] This doesn't (the "1/2" label is not visible): ...