Mathematica Questions, Problems & Solutions : TransWikia.com ~ Page 148

Give NeumannValue a nonlinear function

I have the following simpler example of my actual problem which reproduces my questiondomain = RegionDifference[Rectangle[{0, 0}, {10, 10}], Disk[{5, 5}, 0.5]];a = 0.5; b = 0.2; g =...

Asked on 03/10/2021

1 answer

Construct a permutation tree plot

How to construct a tree like this? I was looking CompleteKaryTree initially, there are some similarities overall,...

Asked on 03/09/2021 by matrix89

4 answer

How to get function to 'expand' while inactivating inner functions

This is sort of a two question problem: Question 1 So I have a function as followsf[x_] := x + 2;I want a way to have a statement such...

Asked on 03/09/2021

1 answer

Unexpected display of Dataset object

I have a dataset on which I apply a GroupBy on the rows and columns. I expected the output to be a table with the first grouping on the vertical,...

Asked on 03/09/2021

1 answer

Parameterized derivative when chain rule usually in order

I have the following problem, which requires the chain rule and can be a little tedious. I'm trying to figure out how to do this in Mathematica, but I can't...

Asked on 03/09/2021 by Abcderia

2 answer

Multiple nested (time ordered) integrals with NIntegrate

I want to construct and calculate multiple (time - ordered) nested integrals of two functions:the "fo" function is applied to the odd and...

Asked on 03/09/2021 by Marsupilami

0 answer

MeshRegion automatically merges vertices that have the same position in space

I sometimes work with surface meshes that have self-intersections (immersions rather than embeddings). MeshRegion usually doesn't have any problems dealing with these kinds of surfaces, unless there...

Asked on 03/09/2021 by yousuf soliman

0 answer

Solving partial differential equation

I am new to mathematica and I want to solve the following pde. I have two boundary conditions and one initial condition....

Asked on 03/09/2021 by Nazanin Variji

0 answer

Upper incomplete Gamma function numerical differences

I have the following issue. Using Mathematica 11.2 (with Rubi loaded) I find that e.g. In[504]:= Gamma[-1/3, 2] // N Out[504]= 0.0353296 + 5.01821*10^-16 I The imaginary part is absurd,...

Asked on 03/09/2021 by kospall

2 answer

Finding diagonal $p$ of a cyclic quadrilateral with sides $(a,b,c,d)$

Let the semi-perimeter of each divided triangle be $$(2s_1,2s_2)= (a+b+p, c+d+p);$$ How to find the common diagonal $p?$ Equating common circum-diameter fetches $$ dfrac{a^2b^2}{c^2d^2}=dfrac{s_1(s_1-a)(s_1-b)(s_1-p)}{s_2(s_2-c)(s_2-d)(s_2-p)}$$s1 = (a...

Asked on 03/09/2021

1 answer

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