質問

Is there a way to compute the n-th symbolic derivative of a function where n is also symbolic?
Is there a way to compute the n-th symbolic derivative of a function, where n is also a symbolic variable? The following does no...

約1ヶ月前 | 1 件の回答 | 0

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Given a taylor series of a function f, how do I get the original function f
syms x k f = symsum(x^k/factorial(k),k,0,Inf)

約1ヶ月前 | 0

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How to obtain all permutations of multiple cell arrays?
Using this FEX download, https://www.mathworks.com/matlabcentral/fileexchange/115340-block-transposition-permutation-and-reshap...

約1ヶ月前 | 0

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How to obtain all permutations of multiple cell arrays?
This is better because the for loop is only 6 iterations long. A={'a1'; 'a2'; 'a3'}; B={'b1'; 'b2'}; C={'c1'; 'c2'; 'c3'; 'c4...

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Vectors must be the same length
i = gradient(q(:, 1),t); % Current derivative U_R = R * i; % Resistor's voltage U_L = L * gradient(i,t); ...

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affine3d used for pure rotation causes translational misalignment
I don't really understand how your posted images show that something is wrong. It shows that the image has changed after the war...

約1ヶ月前 | 0

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Non linear fit extremely bad : what am I doing wrong ?
There are ways to derive an accurate x0 more systematically, e.g., rng('default') t = 0:0.02:10; x = t.*sin(2*pi*1*t) + 0.1*ra...

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How to avoid counting elements in each row of matrix multiple times?
Xedges=linspace(Xmin,Xmax, Nbin+1); Yedges=linspace(Ymin,Ymax, Nbin+1); N=0; for i=1:height(X) deltaN = histcounts...

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How to put different size vectors to one matrix or mat file?
To save to a .mat file save filename d1 d2 d3 d4 To retrieve them, packaged in a struct variable, S=load('filename'); To wri...

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finding the value of a corresponding column in matrix
models = A(A(:,1)==40,2)

約2ヶ月前 | 0

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lsqcurvefit answer upon termination?
You can use a nested OutputFcn, like in this example, https://www.mathworks.com/help/matlab/math/output-functions.html#bsgpq6q-...

約2ヶ月前 | 0

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Newton Raphson gives answers divided by 0
Raw Newton-Raphson is a pretty terrible method, but I assume you'll tell us you have no choice... [f,M]=preanalysis(); %Symbo...

約2ヶ月前 | 0

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Adding elements to matrix
A=[1 2 3 4 5 6 7 8 9 10] B=[reshape(A,2,[]); zeros(1,numel(A)/2)]; B=[0,B(:)'] %the result

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What does MATLAB actually do when switching precisions?
I don't know Julia, but I don't believe the binary decomposition was done correctly. Below is the way to do the binary decomposi...

約2ヶ月前 | 2

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lines that meet each other
You can use, https://www.mathworks.com/matlabcentral/fileexchange/93470-intersections-of-multiple-2d-lines-or-line-segments

約2ヶ月前 | 0

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How to compute integrals on the GPU using trapz function
You cannot use trapz within gpuArray.arrayfun, but I don't think you really need it. On my computer, the following takes about 3...

約2ヶ月前 | 0

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augmentedImageDatastore for image segmentation
Supply the training data in numeric form: X_training = rand([224 224 3 200]) ; %Fake Y_training = rand([224 224 1 200]) ; %Fak...

約2ヶ月前 | 1

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Interpolation to arbitrary points on a patch plot
For example, F=scatteredInterpolant(msh_1.xy, q); interpolatedValues = F({[0.68,1.87],0:0.2:1})

約2ヶ月前 | 0

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When eigs uses a custom function as input, it cannot compute an eigenvalue near a specified sigma
n = 10; A = randn(n); A = A + A'; E1=eigs(A,5,'sa')'; sigma = E1(2)+1; E2=eigs(A,5,sigma)'; E3 = eigs(@(x) (A-s...

約2ヶ月前 | 0

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solving quadratic roots in matlab
Hint: You should consider applying the quadratic formula.

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how to create image data store? I do not have clarity regarding the arguments in ImageDataStore as studied from the website
Matlab does not understand (and neither do we) how a single "test1.tif" is supposed to specify labels for all of your images. Th...

約2ヶ月前 | 0

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Running into issue using fsolve
There are no errors in what you've shown, but it is peculiar that you have one optimization (with fsolve) nested inside another ...

約2ヶ月前 | 0

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How to ask Matlab ga to continously regenerate individuals until they all satisfy user defined constraints prior to fitness evaluation
The way to handle that is to have the fitness function skip the FE modeling and return Inf (or some large penalizing value) if t...

約2ヶ月前 | 0

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Efficiently handling extremely large matrices (N x N) in MATLAB (e.g., N = 137 million)
Could you provide examples of using sparse matrices You give us wide latitude on what the example can be be, so here is one: A...

約2ヶ月前 | 0

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Fast dataset manipulation in MATLAB
The implementation that you wrote first, R = [cos(theta) -sin(theta); sin(theta) cos(theta)]; bary = R' * (y - p); is alre...

約2ヶ月前 | 1

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Expanding a cell array in table into multiple rows
Here's a scaled-down example: T=table(1,2,3,{rand(4,3)}, {rand(4,1)}); T.Properties.VariableNames(end-1:end)=["A","B"] n=...

約2ヶ月前 | 0

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Camera calibrator (picture capture)
Yes, for single camera calibration, it shouldn't matter whether the camera or the pattern (or both) are moving, as long as you d...

約2ヶ月前 | 0

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User Defined Functions in MATLAB
prodby2_kweave19(6) function product = prodby2_kweave19(N) product = prod(1:2:N); % User inputs N, as the argument to the...

約2ヶ月前 | 0

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Increasing lsqcurvefit/nlinfit speed
It would definitely be faster to attach the table as an external variable to an anonymous or nested function, than to freshly lo...

約2ヶ月前 | 0

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How to interpolate one axis in a 3D data?
load dats; F=griddedInterpolant(ss); ss=F({1:139,1:48, linspace(1,9,100)});

約2ヶ月前 | 0

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