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Efficient management of interacting atoms based on their mutual distance
No. It is NOT true that in a set, if atom x is one of the k closest atoms to atom y, that the converse is also true, i.e., that ...

8ヶ月前 | 0

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Numerical integration of area
The region in color? The integral will be negative, or course, since depth is entirely negative. But you perform such an integr...

8ヶ月前 | 1

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Particle Swarm Optimization - What method is used to find local minimum?
Particle swarm optimization, https://en.wikipedia.org/wiki/Particle_swarm_optimization is one of many meta-heuristics used to ...

8ヶ月前 | 0

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Any ideas for making this exponential decay function match the actual data better?
(I spent so much time writing this as a comment, I might as well make it an answer.) @Image Analyst asks a valid question. I ha...

8ヶ月前 | 1

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Remove exponentials with positive argument in symbolic MATLAB
Very often symbolic computations are less easy than you want them to be, because the computer does not see one thing as simple v...

8ヶ月前 | 0

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I need to create a polygon or buffer along an irregular shaped coastline in a 2D array of gridded sea temperature data.
Easy enough. Almost trivial, in fact. Of course, making a buffer zone of width exactly one pixel is alays going to be slightly p...

8ヶ月前 | 0

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Derive full formula from fitlm(X,y,"quadratic")
X = rand(258,6); y = rand(258,1); mdl = fitlm(X, y, "quadratic") There are 6 variables, here called x1...x6, corresponding ...

8ヶ月前 | 1

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Running a large array
Memory is cheap. Get more memory. I'm sorry, but if you want to work with big data, you will often need sufficient capabilities...

8ヶ月前 | 0

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Why did I get two different results in nonlinear programing problems
You have a nonlinear problem. You need to understand that given any set of starting values, an optimizer will sometimes find a s...

8ヶ月前 | 0

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The equation of the curve at the intersection of the two 3D surface, One is a cylinder.
It is not always trivial to find that curve as some explicit function. Here, yes, you can do so easily enough. syms x y z r = ...

8ヶ月前 | 2

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creating loop that stops at correct formula for the given input.
You have a fundamental problem here, that you fail to understand. You CANNOT solve for more than 6 parameters, given only 6 data...

8ヶ月前 | 0

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Help solving linear ordinary differential equation that involves matrix
I would postulate that in fact, it DOES give the correct solution, at least to the problem you posed, but that it is not in the ...

9ヶ月前 | 0

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How to solve this problem combining sequences and reasoning using code?
I would probably think first, and only then write code. I gather the global sequence will always be 1:(4*m+2), so the first 4*m+...

9ヶ月前 | 0

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Find closest value in array
To be honest, the easiest way is to use knnsearch. It works well in one dimension, as you have here, and it should be quite effi...

9ヶ月前 | 2

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Calculations with distributions of variables only
Um, yes. And, no. Firstly, very likely there will be no "named" distribution for even such a simple expression. And depending ...

9ヶ月前 | 0

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How to fastly calculate this matrix operation
First, use better variables. I is a terrible name to use , especially capital I, since it is so easily confused with the number ...

9ヶ月前 | 0

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Find the turing pattern for following equation
I won't do your homework, since this is highly likely to be homework with no effort made on your part, just from the way you ask...

9ヶ月前 | 0

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In Pskmod Code: Reshaping the output signal using the transpose operator .' , Introduce a sign change.
No. You have it wrong. Completely backwards, in fact. The .' operator does NOT cause a sign flip. That is called a conjugation. ...

9ヶ月前 | 0

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Why am I getting gaps in my data when I attempt to interpolate my curve?
As is always the case, look at what you did. Think about it. If necessary, think again. xy = readtable('Sample Test.txt') plot...

9ヶ月前 | 2

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How to call a own function in other mfile?
Did you save it on your search path? (Do you know what your search path is?) Spend some time reading the help for tools like add...

9ヶ月前 | 0

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Show Only certain variables in the workspace
The point of what @Stephen23 and I are trying to tell you is that you are asking the wrong question. You want someone to teach y...

9ヶ月前 | 0

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Solve a system of two variable inequalities with symbolic toolbox
fimplicit does not plot inequalities. Sorry. If you read the help, it never says anything about inequalities. Simplest is to ju...

9ヶ月前 | 0

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How to fix "Error using indexing" while calculating differential equations?
The code you show will work perfectly in MATLAB, in literally any recent release of MATLAB. R2023 is entirely recent. However, ...

9ヶ月前 | 0

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Writing a code to determine the gradient change in a profile
Your problem lies in this line: change_p = (abs(data.variable.gradpressure(i,j+1))-abs(data.variable.gradpressure(i,j)))/abs(da...

9ヶ月前 | 0

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Could MATLAB please provide rref() without the rational conversion?
Just look at the code. type rref Do you see the very last thing it does is do the conversion? Just write your own version that...

9ヶ月前 | 0

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Why does eig return different eigen values depending on whether eigen vector outputs are specified ?
Gosh, the eigenvalue questions are coming fast today. You have an 11x11 matrix. The eigenvalues of that matrix are equivalent to...

9ヶ月前 | 0

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How to interprete an analytical eigendecomposition for a polynomial matrix with size nxn > 4x4 using the Symbolic Math Toolbox.
Ok, do you understand that you CANNOT compute the roots of a polynomial, if the degree of that polynomial is greater than 4? Wel...

9ヶ月前 | 1

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Strict inequalities are not supported (learn why)
It is NOT related to the release number. Sorry. That has nothing to do with it. This has been the case since release 0 of MATLAB...

9ヶ月前 | 0

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Curve Fitter Polynomial Plots Strangely In Script
CONGRATULATIONS! You win an award for the one millionth person to make this mistake! Your award is a free trip to the fabled vac...

9ヶ月前 | 0

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Why is indexing a sparse matrix not behaving how I would expect?
This is not a question about sparse matrices. Well, it is, but it is not really. Sparse matrices are exactly the same as any oth...

9ヶ月前 | 0