# All Questions

29 views

### Conditioned Minimum [closed]

How do I say to NMinimize that I want to know the point $(x_{0},y_{0},z_{0})$ where the minimum of a function f[x,y,x] is ...
63 views

### How to solve different PDE defined in different regions coupled through boundary condition

I would like to solve two different partial differential equations each one defined in a different region and in different coordinates. However the equations are coupled through a boundary condition ...
36 views

### Series expansion in Infinity issue with Zeta(s) function

With this code: Series[Zeta[s], {s, Infinity, #}] & /@ Range[10] // MatrixForm Series expansion for the Zeta(s) ...
66 views

### Will the solution NDSolveValue finds outside of the region I give it give me bogus results?

I'm using NDSolveValue to solve Laplace's equation for a relatively simple system. I have two rectangles, separated by a small gap, which I define using RegionDifference: ...
104 views

### Replace non-zero elements with symbol

I have a very large matrix (tensor) in Mathematica with some zero and non-zero elements. I am interested in replacing the non-zero elements with some symbol or a 1 so that it is easier to view the ...
86 views

### Manipulate a Show [duplicate]

It takes me a long time to construct the following picture: ...
85 views

### TimeSeries interpolation with time gap awareness

Is there an option for ResamplingMethod (or any other practical way) for specifying different behaviours of the interpolation, depending on, for instance, closest dates (on the ...
44 views

### Getting error message from Minimize [closed]

I have acountered a problem I can't fix on my own, even though the problem seems quite simple. Problem The objective function (<<1>>) should be scalar-valued >> It occurs in the very end ...
34 views

### Single rows of arrows in VectorPlot [duplicate]

I have two vector fields which have only one component, e.g. the y-component of the graph below. How do I obtain a plot similar to the one uploaded here, by using ...
19 views

### The command SocialMediaData still returns a blank plot [duplicate]

I have Mathematica 10.3.1 in Mac OS, and the command SocialMetaData is not working, returning a blank plot. I have seen a similar question from Nov 28 '15, but it is still not solved. ...
41 views

### Out[ ] cells suddenly begin with newline

This is a "feature" of Mathematica that persists through several versions. What happens: Mathematica experiences some internal hiccup and from then on starts every Out[ ] cell with a newline, which is ...
125 views

### Do loop with If condition

I have the following formulas: 1- A cross section: sigma[beta_,alpha_,Y4_] := c^2/(256*Pi) * (1/2) ( Ytt[beta,alpha,Y4]/ m ) * Abs[A]^2 Where c is a strong ...
88 views

### How can the same Mathematica version give different symbolic results on different machines?

I'm testing the following code: ...
121 views

### Fractal plotting for the Collatz fractal

I have the following equation: f[z_] := 1/4 (2 + 7 z - (2 + 5 z) Cos[Pi*z]) I want to map this on the imaginary plane such that if it converges under iterations ...
94 views

### Tweet high quality images

I'm trying to export images to a twitter account with mathematica and the quality of the images is rather disappointing. Here are the others in case you want to see it in the wild: here This is ...
15 views

### Finding Y for a Data Set with Std Deviation and Z Score [migrated]

While only 15% of babies have learned to walk by the age of 8 months, 90% are walking by 13 months of age. If the age at which babies develop the ability to walk can be described by a normal model, ...
42 views

### NIntegrate::inumri error with continuous function

I'm trying to calculate the finite part of a divergent integral numerically, but as I bring the regulator down to $0$, Mathematica starts throwing an error. ...
86 views

### CoefficientList for exponentials terms

I have a long expression with exponentials of variable t1. I need to create a list of the coefficients for each exponential. The problem seems to be that several ...
222 views

### Exclude overlapping lists while keeping disjoint- and sub-lists?

Consider a function f[l1_List,l2_List] which is given lists of integers. Whenever two of the lists contain completely disjoint sets of integers OR one of the lists ...