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Mathematica : Recent Questions and Answers (Page 100)

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

How to convert cuboid to mesh efficiently

cuboids = Table[Cuboid @@ (pts = RandomReal[100, {2, 3}]), {i, 10000}];Method1:AbsoluteTiming[r = BoundaryDiscretizeGraphics[#, MaxCellMeasure -> [Infinity]] & /@ cuboids[[1 ;; 100]];]Method1, Sometimes, on my macbook pro, costs 5...

Asked on 05/14/2021

3 answer

How to restore broken Automatic cell grouping behavior?

By default output cells are grouped with the input cell from which they are generated (note the nested cell brackets on the right): Sometimes...

Asked on 05/14/2021

1 answer

How to create search indices for custom documentation pages?

I have a package that uses custom documentation pages that are not generated with Wolfram Workbench. How can I create search indices for these pages? Requirements:Searching should work in...

Asked on 05/14/2021

2 answer

Fit and find fitting parameters of data given an equation

If I have the following data:data= {{-2., 0.147789}, {-1.52288, 0.237749}, {-1., 0.476084}, {-0.522879, 0.641128}, {-4.82164*10^-17, 1.04976}, {0.477121, 1.43399}, {1., 1.77276}, {1.47712, 2.23469}, {2., 2.46328}, {2.47712,...

Asked on 05/14/2021

1 answer

NDSolve with embedded FindRoot and NIntegrate

I am trying to plot results for a very simple differential equation of the form: $$frac{partial^2 x(N,z'(N))}{partial N^2} = F(N,z'(N)), $$ where $z'(N)$ is a function of ...

Asked on 05/14/2021 by user1886681

1 answer

Integral of $r frac{2^{r-1} log (2) e^{-frac{sqrt{2^r-1}}{b}} left(2^r-1right)^{frac{d}{2}-1}}{b^d Gamma (d)}$ with Mathematica

I'm trying to find the integral given below with Mathematica $int_0^{infty } r frac{2^{r-1} log (2) e^{-frac{sqrt{2^r-1}}{b}} left(2^r-1right)^{frac{d}{2}-1}}{b^d Gamma (d)} , dr$ However, it takes too long for it...

Asked on 05/14/2021

1 answer

Animate ellipse drawing

$(x/3)^2+(y/5)^2=1$, $x=3sin[t]$, $y=5 cos[t]$ I want to draw a phase trajectory with time-lapse using manipulate or animate. Manipulate[ParametricPlot[(x/3)^2 + (p/5)^2 == 1, {x, -3, 3}, {p, -5,...

Asked on 05/14/2021 by Tursinbay

0 answer

How to preserve my constants

[Sigma] = Constanta = Constantb = Constant[Epsilon] = ConstantT[x_] := ([Sigma]/(2*[Epsilon]))[a/(a^2 + x^2)^(1/2) - b/(b^2 + x^2)^(1/2)]In mathematica this looks way simpler, so I can't use this function unless...

Asked on 05/13/2021 by Mohd. Farhan Hassan

0 answer

How to get x value where area under curve is some number?

My goal is to get x value where area under the curve (from the x ~ infinity) is about 0.05. But the code which I have tried shows errors. How...

Asked on 05/13/2021

2 answer

Equivalent of numpy's newaxis

Numpy has a newaxis object that allows you to insert a new dimension of length 1 into an array. So after y = x[:, numpy.newaxis, :] we have y[i, 0,...

Asked on 05/13/2021 by Dan Piponi

3 answer

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