Numerical Methods Backward Difference
I won't directly do your homework for you. I'll show you how you might solve for the coefficients of a formula you should alread...

21日 前 | 1

SVD of each row of a matrix
Sorry, but this seems to make little sense, since most of that set of singular value decompositions will be trivial. Or, perhaps...

21日 前 | 0

Matlab reads file with different order
Must I point out the data in that file are arranged as: data = textread('RQ_par.txt') data = 0.9011 ...

22日 前 | 0

rref gives an impossible answer
P = [0.9871 0.0027; 0.0129 0.9973]; A = P - eye(2); A A = -0.0129 0.0027 ...

22日 前 | 2

How do I sink matlab to my computer to be able to download matlab files?
Whenever I try to sink my computer, it gets wet because I have just dunked it in water. And gettiing my computer wet tends to me...

22日 前 | 0

Hello, Could you please provide the export control number (ECCN) for Matlab. It is needed in order to purchase Matlab licenses by our company.
Answers is not customer service. Contact Mathworks directly. https://www.mathworks.com/company/aboutus/contact_us.html?s_tid=gn...

22日 前 | 0

For Cody challenges, should the best solutions be based on the least number of characters used in one's code?
Cody has some unusual aspects. I hate to call the idea flawed, but there are some aspects I would like to change, with absolutel...

23日 前 | 3

Loosely Constrained Least Squares Solution
Your concept of what a constraint tolerance means is wrong. and loose equality constraints are not something you can set. Inste...

23日 前 | 1

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about newton Bionomial Expansion
What is the problem? Why not try it? Make an effort. You will learn by doing so. If we need to teach you everything in this, we ...

23日 前 | 0

How to I find X unique combinations (order doesn't matter) of X numbers within an array of X numbers.
Youtr title is still far too vague to provide an answer, but the comment you made may be sufficient. You have lets say 10 numb...

24日 前 | 1

why do i get this nan
Time to learn to use logs. Yes, I know you probably know what a log is. But you appear not to know why you need to use them here...

25日 前 | 1

compute the approximation of pi
Now that Steven has had his answer accepted, and you should have finished your work, I'll add an answer to expand on the ideas i...

26日 前 | 1

Entropy calculation at base 10
Um, think about what entropy means, at least in a mathematical form. It is just a logarithm. https://en.wikipedia.org/wiki/Entr...

27日 前 | 0

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Calculate the length of the major axis of an ellipse using its perimeter
You can't. That is, knowing ONLY the perimeter of an ellipse, you CANNOT know the major axis. That is, I can give you two ellip...

27日 前 | 0

Quasi-Newton method for optimization
If all you need to do is solve the linear system of equations, subject to the EQUALITY constraint, use LSQLIN. That is the tool ...

28日 前 | 1

How to get linearly independent subset of matrix columns in a high-dimensional matrix
You have thousands of columns, and therefore probably thousands of rows. Why does it not seem surprising that big problems are c...

30日 前 | 0

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How to determine the functions used in a long matlab script?
NO. Don't transfer a long list of functions to one folder. That is a really bad idea. Put the directories that contain your fi...

30日 前 | 0

Using vpasovle to search along a line
It sounds as if you know the solutions lie along a line, but you don't know the slope of that line, that x and y must be proport...

model for fitting polynomial of degree 3
Just read the help. x = rand(10,1); >> y = rand(10,1); >> D = dataset(x,y); >> fitlm(D,'poly3') ans = Linear regression m...

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Permutation of rows with specfic conditions
This is easy enough. But you need to recognize that all that matters is the matrix C. A really has nothing to do with it. You n...

Scattered interpolation unexpected peaks in extrapolation results
Walter is correct, in that depending on the scattered data, if some points fall in just the right orientation (or perhaps, in th...

ENLARGE AND CHANGE COLOR OF A FRACTION IN TITLE !
Not THAT much of a beginner. :) A true beginner thinks Latex is something you find in rubber gloves. :) h1=title('\$y = \frac{1...

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I try to find the coefficients of the polynomial using nonlinear regression analysis.
That function is not a polynomial. Regardless, use one of many tools, thus lsqcurvefit or lsqnonlin from the optimization toolb...

how to shade area bounded by the curves x=1 and y =4-x^2?
Create a sequence of points that define the region you want. Since the function has roots at +/- sqrt(2), it is easy to do. If ...

How can I create a CI after fitting a nonlinear function using LSQCURVEFIT with constraints?
Confidence intervals are more difficult when you have a constrained problem. The issue is when there are active bound or inequal...

How to solve the linear system in the matlab?
Easy peasy. ab = [2380*E,2385*E]/[Q , -K; Y , T]; a = ab(1:64); b = ab(65:end);

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Integral2 for circular plot not working
The warning message from scatteredInterpolant tell you there are duplicate data points in your data. Should you be remotely surp...

How to exclude range of values in fmincon
+1 to Dana, with a gentle caveat. Dana has offered what MAY be a good idea. That is, fmincon CANNOT handle a disjoint set, thus...

how to make symbolic computations fast?
No. Your conclusion the only way is VPA is simply wrong. You can use my HPF toolbox instead. It is available for free download f...

where can i find all the special comment properties ?
These are flags to allow you to supress specific MATLAB code analyzer warnings. https://www.mathworks.com/help/matlab/matlab_p...

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