# Questions tagged [system]

Questions on implementation details and how the parts of Mathematica are arranged or configured to work. Avoid this tag for issues that are confined to a specific operating system.

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### How solve this nonlinear equations system by 12 unknowns?

We consider the following integral equation of mixed type: $x[t]=\frac{t^4}{6} -\frac{t^3}{3} +t+\Sigma_{\mu=1}^2\int_{0}^t k_\mu[t,s]G_\mu[s,x[s]]ds ,0\leq t\leq 1$ ; (1) where $k_1 [t, s] = s^3$...
24 views

### Run .exe file from Mathematica with another file as argument

I'm dealing with three files in my project : A mathematica Notebook containing all the properties for the calculation which generates a .inp file A .inp file (Input for the .exe file) A .exe file (...
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### How to run wolfram code from the finder in macos?

I'd like to run wolfram code (probably a .wls script) on a file or set of files by selecting them in the finder and using Right-click > Services. For example, ...
51 views

### About Blue Screen of Windows System after starting Mathematica 12.2/12.1 Win10

After starting Mathematica, My computer will Blue Screen. Mathematica version is 12.2 win10. An error of Win10 shows ...
53 views

### Solve a system of slope-intercept, ODE, and PDE with spatial and time variable

I am new to Mathematica and I need to solve a system of coupled ODE and PDE with two variables (space and time) and one of the parameters is only dependent on the space. The set of partial ...
113 views

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### How to create a new notebook without the value defined in a former notebook? [duplicate]

When I try to calculate sth new and create a new notebook, the variables in the former notebook will be a trouble. The only I know is use Clear["*"] or quit the ...
1k views

### Difference between NSolve and FindRoot?

While it is clear what FindRoot does (start at a point and look for local extremum using gradient), how does NSolve work? Also, ...
139 views

### Is it possible to find the equation of motion of a spring-mass system using differential equations as input?

I am searching for a solution the check the validity of my calculations on standard dynamics problems. Basic mechanical engineering environment, systems containing movable masses connected to each ...
187 views

### Defining system of Equations

I am not able to define a system of n equations having n variables x1, ...
45 views

### Make a term appear in my solution

There is a solution for a linear system: ...
55 views

### Is there a way to capture crash data on Windows?

I have a very large notebook which I've been working on for years. Every day, after I add to it, I save it as PDF. Recently Mathematica has crashed when I try to save it as PDF. Mathematica just ...
988 views

### What makes a function ticklish?

The Advanced Dynamic Functionality tutorial informally describes a ticklish function as follows: Every time you evaluate RandomReal[], you get a different answer,...
456 views

### Catching MachineUnderflow in Version 11.3

Ilian's answer to question 72229, involves SetSystemOptions["CatchMachineUnderflow" -> False] Evidently, this worked in earlier versions of Mathematica, but ...