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Mathematica : Recent Questions and Answers (Page 234)

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

Solving a non-linear 5 variable system

I'm trying to solve the following system for different values of the parameter bsystem={y1 - (-1 + x) (1 + E^(-((1 - x + y2)/(5 z2)))/(20 z2)) + (...

Asked on 10/09/2020 by jarhead

1 answer

Convolve and fitting

I want to convolve two equation, then I want to find the parameters. But it doesn't give the answer and Takes too much time. What is the wrong with my...

Asked on 10/08/2020 by Tharaka

1 answer

RandomPoint fails for any higher dimension

region = ImplicitRegion[x^2 + y^2 + z^2 + p^2 == 1, {x, y, z, p}];RandomPoint[region]The result is RandomPoint[ImplicitRegion[x^2 + y^2 + z^2 + p^2 == 1, {x, y,...

Asked on 10/07/2020 by YUNFENG GUO

3 answer

How to get what mouse button was pressed in EventHandler?

I'm trying to make an interface that (basically) records what mouse button was pressed inside the cell of a matrix. The code I have so far isA = ConstantArray[0,...

Asked on 10/06/2020

1 answer

Are there some programs about inverse Fourier and Laplace transfroms?

To be more exact, I have a function F[w_,s_], where $w$ is the Fourier transform of $x$ and $s$ isthe Laplace transform of $t$....

Asked on 10/06/2020 by Blueka

1 answer

Switch bool from False to True on key press?

I would like to let a boolean variable switch when I press a key on the keyboard. For example, I writeactivateE := Block[{}, edown = True;];SetOptions[EvaluationNotebook[], NotebookEventActions -> {{"KeyDown",...

Asked on 10/05/2020 by Kagaratsch

1 answer

Probability poker game task

I have this task: And I've got this far in my mathematica program, however I can't figure out why my...

Asked on 10/04/2020 by Vetenskap

1 answer

How to know if parameters should be given to DensityPlot or to BarLegend?

Consider the following example:DensityPlot[10^(LogTQ)*10^(LogA),{LogTQ,-2,1},{LogA,2,6},PlotLegends->BarLegend[Automatic,LabelStyle->Directive[30],LegendLabel->"Log10[Subscript[P, C]]"],FrameTicksStyle->Directive[30],FrameLabel->{"Log10[Subscript[T, Q]]","Log10[A]"} ,LabelStyle->Directive[30],PlotRange->All,ColorFunction->"SunsetColors"]It produces the following: My question is: Here I figured out that putting...

Asked on 10/02/2020

1 answer

Solving a system of differential equations whose one of the coefficients is imported data

Suppose we have a coupled system of differential equations:begin{equation}frac{db}{dt}=(- gamma_b -iomega_b)b-ifrac{g}{2}p;quadfrac{dp}{dt}=ifrac{g}{2}Delta N(t) b-(gamma_a+gamma_b+2iJ)p.end{equation}If $Delta N$ was fixed, the solution of the system would...

Asked on 10/01/2020 by Saeid

0 answer

How to solve a differential equation involving LaplaceTransform?

currently I'm working on a problem in which I need to solve an equation of the following form: $$mathcal{L}left[frac{partial f(x,t) }{partial x} + frac{partial f(x,t)}{partial t}right] = frac{1}{y^{3/4}}mathcal{L}left[frac{partial^{2}f(x,t)}{partial t^{2}}right]...

Asked on 10/01/2020 by Fernando L. R.

1 answer

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