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# Mathematica : Recent Questions and Answers

Find answers to your questions about Mathematica or help others by answering their Mathematica questions.

## Correcting error messages emitted by ListPlot

I have an assignment to use Module and in which I have to implement:The input of the program are a list of numbers and a list of stringsCheck whether every...

## Mathematica v 12.1.1.0 FrontEnd Autoformatting Bug (?)

I'm at my wit's end. I'm using MMA version 12.1.1.0 (for Mac), and the front end is behaving bizarrely.When I've chosen Subsection style, there are times when I'm writing...

## How to solve a nonlinear second order ODE

I want to solve this equationy''[x] + a + b y[x] + c y[x]^2 == 0, y[∞] == 0, y'[∞] == 0 where a, b and c are constants....

## Derivation of Interpolation function

I have a problem to derive an interpolation function.I am quite new to mathematica, so I suspect I miss something. I have a list of values of 1000 values...

## Finding 36 integer solutions to a set of 14 equations using various boundary conditions

What is good way to solve this system of equations? I have it run now for quite some time and it does not spit out a solution.n = 857097;Solve[{n...

## Show Graphics on top of ParametricPlot3D

I want to show a curved trajectory in 3D with a small Sphere/Point denoting a specific point. Therefore, the Sphere/Point needs to be always visualised "in front" of the curve;...

## How to write to a VARBINARY field using a stored procedure

Is it possible to write a binary file (e.g. an EMF) to a VARBINARY field using a stored procedure? Creating an example EMFcircle = Graphics[{Blue, Circle[{2, 0}]}, ImageSize ->...

## How can I minimize expression involving logarithms?

I am trying to find minimum of this expression:$$log _aleft(frac{4}{9} (3b-1)right)+8 log_{frac{b}{a}}^2(a)-1,$$where $0 < b < a < 1$. I triedClear[a, b] ...

## RegionProduct to extrude a 3d volume with thickness variation

RegionProduct[] is very useful when one intends to extrude a 2d region into 3d:s = BoundaryMeshRegion[RandomPolygon[{"Convex", 15}]];sLinExtrd = RegionProduct[s, MeshRegion[{{0}, {1}}, Line[{1, 2}]]]Output:...

## Three dimensional Laplacian insulated on lateral faces and convectively exposed on transverse faces (updated)

I have the three dimensional Laplacian $nabla^2 T(x,y,z)=0$ representing temperature distribution in a cuboid shaped wall which is exposed to two fluids flowing perpendicular to each other on either...