Questions seeking help understanding error messages and fixing errors.

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0
votes
1answer
33 views

Trying to solve ODE. Need help with error messages [on hold]

With this code I get an error-message: Equation or list of equations expected instead of True in the first argument. Apparently y'[0] == v0 gives ...
0
votes
0answers
59 views

Force NDSolve to use finite difference

How to force NDSolve to use finite difference instead of FEM. I have the following code: ...
0
votes
0answers
67 views

Boundary conditions for NDSolve

I get the following message: Boundary values may only be specified for one independent variable. Initial values may only be specified at one value of the other independent variable. >> from ...
0
votes
0answers
37 views

How dangerous is 'Overflow occurred in computation' message? [closed]

I got this warning at the end of rather lengthy symbolic calculation. The result seems feasible, but I am interested, whether this problem may bight be later, so to say. Thanks=)
0
votes
2answers
76 views

BarChart with error bars

I need to plot BarChart with the error bars. What's the most straightforward way to do it?#plot range from 8 to 10 {8.5,8.6,8.9,9.5} and error bars of 0.1 and labeling of a,b,c and d. Is there ...
0
votes
1answer
129 views

“Save Graphic As…” suddenly doesn't work

I suddenly can't create jpegs or pngs using the menu. I have not changed versions or operating systems lately, but the method I've used all along suddenly doesn't work. When I create a plot, ...
1
vote
1answer
37 views

“MemoryAllocationFailure” in DSolve

Mathematica 10.4, Windows 10, 6 GB RAM, 64 bits When I trying to solve DSolve[{v'[t] == 100 - 0.15 v[t]^2, v[0] == 30}, v[t], t] I get ...
1
vote
1answer
44 views

EntityValue doesn't work

EntityValue doesn't work I have a Windows 10, and Wolfram Mathematica 10.4 I reinstalled W.M but there is a same problem
1
vote
0answers
35 views

Fitting Data when both Variables Have Uncertainties [duplicate]

Does there exist a method in Mathematica for fitting some function f(x; a, b)=y (with parameters a, b) to data of the form {x, y} when both x and y have different uncertainties? It seems like it would ...
2
votes
0answers
54 views

Solving a system of first order differential equations [closed]

I've got a set of equations of motion here (describing the interior of a charged black hole, if you're interested). It's just four first order ODEs, so Mathematica should be able to solve this easily ...
1
vote
1answer
67 views

Mathematica 10.4.0 closes after 'Plot' command on Mac OS X

I have a Macbook air (2013) with OS X 10.8.5, and recently I installed Mathematica 10.4.0. The problem is, every time I try to plot something like Plot[x,{x,0,1}] ...
5
votes
0answers
95 views

SiegelTheta throws errors from calling Range with complex arguments

Bug introduced in 10.4 or earlier. This may or may not be related to the bug reported in this question. I was trying to verify the results of this challenge over on Code Golf with the following ...
0
votes
0answers
46 views

Overdetermined Differential Equation is not overdetermined

I want to solve a system of two differential equations ...
1
vote
0answers
45 views

Manipulate Listplot of table [closed]

There is a simple code but it doesn't work Manipulate[ ListPlot[ {Table[ {Sin[Pi/4 Cos[t]], -Cos[Pi/4 Cos[t]]}, {t, 1, n, 0.1}]}], {n, 1, 20}]
2
votes
0answers
47 views

Unusual error message from Solve when called by DSolve

Question 111150 presents an equation nonlinear in its leading derivative ...
1
vote
1answer
70 views

Variable coefficient Differential Equation

Can anyone help with the following differential equation. The errors i am getting are also given. ...
0
votes
1answer
41 views

Error: Recursion Depth of 1024 Exceeded During Evaluation

I wrote a function that exchanges integration and summation in an expression. ...
0
votes
0answers
62 views

Switching from Integrate to NIntegrate

I'm trying to decrease the amount of time that it takes to run the following code: ...
6
votes
0answers
208 views

Mathematica 10.4 crashes when using too many font sizes

While working on How to make the digits of π around like this? I encountered a problem that Mathematica would crash at regular intervals with an internal self-test error, either ...
4
votes
1answer
149 views

Why does merely writing SeriesData[] with zeros give an error, even if it is never called?

Bug introduced in 8.0 or earlier and persisting through 10.4.1 Why does the code Function[t, SeriesData[t, 0, {0}, 0, 1, 1]] give me the following error? ...
3
votes
1answer
75 views

How to stop Mathematica from turning off warning messages in a loop?

I'm using NonLinearModelFit on a large set of data and which contains a nested Do-loop. I'd like to see all of the cases where there is an issue with the non-linear ...
4
votes
1answer
71 views

Is there a message for functions evaluating to infinity?

Everyone has perhaps been irritated by the Power::infty message: Cos[0]/Sin[0] Power::infy: Infinite expression 1/0 ...
3
votes
2answers
138 views

How to expand error messages truncated by Skeleton (<< >>)

I have a command that gives me an error message with lots of abbreviations like Power[<<2>>]. Specifically, I get Sorry for the bad formatting, I ...
1
vote
1answer
40 views

Error in the exercise or in mathematica settings

I am going through Kenneth Rosen's book about discrete mathematics. Chapter 1 there is a example where we build functions to check valid conclusions. Here is the code: ...
0
votes
0answers
32 views

Solving for limit of integration with a piecewise function (FindRoot vs NSolve) [duplicate]

I am trying to solve for the limits of integration using a piecewise function. I'm doing this in a loop over a list of data, mostly because I'm not well-versed enough in Mathematica to make this a ...
1
vote
1answer
88 views

PerfectNumber messes with my iterator

I am using Mathematica 10.4 (sorry bbgodfrey) (temporary message) Let mmVerbose = 10^2000 + 123123798797192983712873198273122323; kkVerbose = 10^7; The ...
1
vote
0answers
62 views

DSolve throws an error about Solve and returns unevaluated [duplicate]

I evaluate: DSolve[{2*y[x] + y'[x]^2 + a*x^b == 0}, y[x], x] During evaluation of In[26]:= Solve::ifun: Inverse functions are being used by Solve, so some ...
0
votes
0answers
58 views

Why does this code produce an infinite loop?

I can't understand the way this code behaves and suspect that is because of some unrecognized reasons of general interest. Otherwise, I apologize and will retire the question. In ...
1
vote
1answer
36 views

This input is incomplete [closed]

I'm sorry if this is a totally simple question, but I'm new to Mathematica, and I've just spent 30mins looking through the documentation, but I can't seem to figure out why this code won't work: ...
5
votes
1answer
81 views

An unexpected match when using Condition, Optional and passing a Sequence

Mathematica is behaving in an expected way when passing a parameter with an Optional and a Sequence. Here is an example: ...
0
votes
0answers
79 views

NIntegrate non-numerical values error occurs when MaxRecursion is increased

I was doing some numerical integration,and found out when MaxRecursion was low(such as the default 9 times),the integration can have a result with the warning: ...
1
vote
0answers
61 views

Mathematica Internal Self Test Error winFonts|c|310 [closed]

Every time I open Mathematica, I get two identical error messages: ...
3
votes
1answer
52 views

ExcelRun::failed: Type mismatch >> error when calling an Excel macro from Mathematica

I have a macro in a module within an Excel file (called "test.xlsm", saved on my desktop) that takes one argument as a string: ...
2
votes
1answer
69 views

Display line number/stack trace of error in script (i.e. batch mode / command line interface)

I am trying to set up a Mathematica script so that it runs from the command line in the manner that a sane person would expect. I have the following at the start of the file: ...
4
votes
1answer
115 views

Error given by the Clear function

I'm trying to clear out some variables that I've previously used, so that I can use them again. I tried this in a different notebook and it worked, however, now, a command like : ...
4
votes
1answer
170 views

Goal optimization: finding the best combination of capacitors and resistors resulting in given properties

I want to edit @MarcoB answers (because the code he gave doesn't answer the question appropriately)->(the function that need to be optimised is not implemented as asked) But it seems like I am having ...
0
votes
0answers
53 views

Getting NDSolve::conarg: error from attempt to solve diffusion equation [on hold]

I'm trying to model diffusion of a single species from a fixed reservoir into a porous solid. Function u[x,t] should go from 0 < x < L, while f[x,t] should go from L < x < Vratio. I have ...
1
vote
0answers
40 views

License not released after kernel is stopped for KernelTimeLimit reached?

Using webMathematica, doing massive tests of our functions (each call can take from 0 to 15 seconds). After a while we started getting lots of 403 Forbidden errors. webMathematica.log: ...
11
votes
1answer
215 views

How to deal with bad arguments when a function's UpValues is a pure-function?

In practice, I needs to define the UpValues of a user-defined function. For instance, the operation of function like differential formula , expansion and so on. ...
3
votes
1answer
79 views

Compile::cplist: error from MapThread [duplicate]

What is the cause of this error? Compile[{{r, _Integer, 2}, {d, _Integer, 2}}, pos = Position[MapThread[#1 > #2 &, {r, d}, 2], x_ /; x == True]] ...
4
votes
2answers
139 views

In 10.3 System DialogInput execution error

I have upgraded to 10.3 from Mathematica 9.0. However, in 9.0 things that ran well will not run in 10.3. A typical example is: ...
2
votes
1answer
225 views

Serious Startup Error: Error code 583

I can't start Mathematica 10.2 in Windows 8.1 64 bit, I'm getting this error even after I uninstalled and re-installed. I emailed support a couple fo days ago, but I'm yet to hear from them and I ...
1
vote
0answers
66 views

FindPeaks “expecting an image” [closed]

I am trying to use FindPeaks for a list of data, but when I have tried to use it it returns an error. I went to the help menu for the function to check that everything is in the correct format, and ...
3
votes
1answer
87 views

DSolve with Piecewise Function in System of DEQs

I have been messing around with this problem from MSE, which is given by: $$ \ddot{x} = \begin{cases} -x + c\cdot \operatorname{sgn}(x)& |x| > c\\ 0 & |x|\leq c \end{cases} $$ where $c ...
0
votes
1answer
108 views

Solving ODE system with NDSolve: “singularity or stiff system suspected” [closed]

I'm trying to solve a set of 4 ODEs as specified below, however I'm getting this error ...
1
vote
1answer
75 views

How to fix the error InterpolatingPolynomial::ipdup: The abscissas are not distinct [closed]

I'm trying to plot the function Abs[InterpolatingPolynomial[..] - f[x]] where f is a function. I receive the error: InterpolatingPolynomial::ipdup: The ...
0
votes
0answers
46 views

Serious Startup Error, “The file outline cache was ignored.”

I was trying to change my default fontsize. I was reading Changing the default font for StandardForm I/O from 'New Courier' to 'Consolas'? and the instructions for affecting all future notebooks ...
1
vote
2answers
63 views

Floor function issue [closed]

While attempting to evaluate a recurrence relation an error with the Floor function is encountered. Computing an example to verify the floor function works correctly I ran the code ...