# Questions tagged [error]

Questions seeking help understanding error messages and fixing errors.

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120 views

### Numerical integration converging too slowly. how to over come this

I have a function U1 which contains a linear combination of trigonometric function, I wanted to Numerically integrate this function U1. Since each trigonometric functions associated with some unknown ...
169 views

### Mathematica and IBVP mixing temporal and spatial derivatives

The following PDE's-system-solving code ...
125 views

### FindEquationalProof with Logic in Wolfram Mathematica

I try to "make" proof in Wolfram Mathematica. Thats a proof: if a->b and b->c then a->c I tried ...
36 views

### What is this error when doing Plot[ArgMin[Norm[…,p]],…]?

When doing Plot[ArgMin[Norm[x - {-3, -1, 0, 5}, p], x], {p, 1, 3}] I get this error message: ...
90 views

### Why is part of the output “Null”? [closed]

Whenever I execute the code, portions of the output are null. How can I fix this? I am not sure the extent to which the result is invalid because I am not entirely familiar with the null output, ...
130 views

186 views

### NDSolve:Coupled PDE's, initial-boundary value problem: unreasonable “insufficient number of boundary conditions” error

I tried to NDSolve the PDE system: $$\partial_t y = x\partial_z w \quad\quad \partial_t w = \partial_z y \quad \quad \partial_z x=w$$ for $$(t,z)\in[0,1]\times[-1,0]$$ with initial conditions x(...
55 views

### Increase in area under the curve as standard deviation decreases? Not what I expect

Suppose I have a PDF with mean a and standard deviation b defined as below. As the value of k increases, a should decrease, while b should also decrease. This should cause a decrease in the output, ...
50 views

### problem to solve a non linear equation

variable[[i]]-(1/Pi)((t/2 - 1)*(Pi-2Sqrt[t-1]+2/3(t-1)^(3/2))+(-1+4/(3t)+4/(3t^2))Sqrt[(t-1)])==0 This is the equation but the problem is that the solution is ...
63 views

### How to prevent the message: Not enough memory to display a cell

While running a single-cell GUI application that repeatedly changes and refreshes its content I got this message: There was not enough memory to display a cell... I found in this old MathGroup thread ...
95 views

### Main function in my package doesn't work

I am new to Mathematica package development and I have been trying to write and run some simple packages to get a feel for it. I wrote the following package. My aim is to define a package which has ...
100 views

### Integrals of a Fourth order differential equation: Part B

I want to continue this topics (enter link description here): Is it possible for us to get the value for integrals of a Fourth order differential equation (But) which includes a constant parameter? ...
83 views

### Integrals of a Fourth order differential equation: Part A

Is it possible for us to get the value for integrals of a Fourth order differential equation in MMA. I attach the code that i have used in MMA: ...
56 views

### Integral converges only if Mathematica kernel has just started?

After just starting Mathematica (or quitting the kernel) if I run: ...
59 views

### DifferentialRoot with parameters that “are not exact numbers”

In the course of developing an answer to 185859, I encountered the following difficulty. With ...
94 views

### Getting error 'InterpolatingFunction::dmval' while trying to find the maximum of an interpolated function

The code I used is ...
36 views

### Getting error RSolve::dsfun [closed]

I an trying to solve a recursive formula and find the explicit representation of $a$. $a_0 = 1$ $a_{n+1} = 3 \sum\limits_{i=0}^{n} a_i$ When I evaluate ...
57 views

### Combining ListLinePlot graphics with Show

I'm new to Mathematica working on a project for school. I'm trying to show the deflection of a cord over time by breaking it up into 14 points and plotting the x,y coordinates of each point over time. ...
142 views

### Why this issue with Workbench?

I just installed the current version of Eclipse and then the current version of Workbench 2 by following the online instructions at the Wolfram site for installing it as a plugin. I can create a ...
66 views

### OpenMATLAB[] hangs

I just migrated my Mac from one machine to a new one and it seems like MATLink is broken now. When I call OpenMATLAB[] in Mathematica the command hangs forever. I ...
170 views

### Solve equation: Exponent is out of bounds for function PolynomialGCD

I am trying to solve the equation below but it returns this error :Exponent is out of bounds for function PolynomialGCD". I would be gratuful if you someone help to solve this equation. ...
34 views

### Is there a problem using Check and Quiet with LinearModelFit?

I am using LinearModelFit in conjunction with Quiet and Check because I need to control when ...
41 views

### NDSolve dealing with message infinite expression and non numerical value non homogeneous differential equation

I'm trying to solve the following differential equation with some specific conditions ...
53 views

### How to optimize this script?

fx8350, 16Gb ram just need to solve this: 13, 19, 19, 16, 26, 33, 26, 31, 5, 24, 21, 34, 35, 35, 35, 20, 7, 12, 18, 17, 6, 8, 15, 24, 2, 17, 15, 22, 29, 15, 21
147 views

### The movement of the point in orbit is one hundred long timesteps

This list will produce a circular orbital plot: ...
98 views

### nlnum problem of NDSolve

I'm having a difficulty to NDSolve a ODE due to nlnum (according to the error message). Below is the code I have. First of all are functions: ...
175 views

### Getting error NDSolve::ndsz from my ODE

I'm trying to figure out why I am consistently getting singularity error when I'm trying to solve an ODE using NDSolve. Any help will be appreciated. ...
162 views

### How to change the integral variable and integral upper/lower limit?

I am dealing with the symbolic operation of taking the antiderivative, e.g., Integrate[f, x] (where $f$ represents a complicated function which cannot return ...
52 views

### An error of unequal length when using Transpose[y]? [closed]

Why do I get this error? I just clicked shift+enter in the y and it appeared. https://i.stack.imgur.com/IAKs8.png This is the data ...
45 views

### Mathematica stops showing messages, how to get them back?

I realized that, for an identical expression, sometimes I get an error message and sometimes I don't. If I then shut down and restart Mathematica, messages are back. How can I get messages back ...
498 views

### Wolfram Mathematica on mac os Mojave

I found out that Apple stop support programms with 32-bit architecture in new Mac OS Mojave, has anyone already updated??? I want to see new dark mode, but if WM will stop working it will be a problem....
501 views

### Solve piecewise function

I have two piecewise function ...
80 views

### Estimation of the error for zero degree of freedom fit with error bar

I am performing a fit on experimental data with zero degree of freedom but with error bar using NonlinearModelFit: ...
67 views

### Compile errors after reloading of laptop contents after challenging MacOS Mojave installation

I tried (foolhardily, it appears) installing macOS Mojave Version10.4 on my MacBookAir, but encountered major problems--that seemed to have been (finally) fixed after a reinstallation and reloading of ...