Answered
Fitting a Curve to an Uncurling Object
The curve fitting toolbox assumes the functions are SINGLE VALUED. There can only be ONE value of y for any x. If that is not tr...

10 días ago | 0

Answered
How fast is fminsearch over brute force? or How fminsearch deal with a local/global min?
How fast is it? Since brute force is an extremely poor method to solve anything (unless your name happens to be the incredible H...

10 días ago | 0

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Answered
How to reduce dimension of griddedinterpolant?
whos Name Size Bytes Class Attributes eff_map 500x500 2000000 double ...

10 días ago | 0

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Answered
GA vs patternsearch for Integer problem with equality constraints
An exitflag of -2 means that GA never even found a feasible starting point for your problem. A larger population size lets it ra...

11 días ago | 1

Answered
Can one run fminsearch for a function defined by cases?
Can you? Yes. Should you? This may sometimes be a poor idea, although it depends on the specific segment functions. Are the seg...

11 días ago | 1

Answered
Generating parings of numbers and the pairs must not contain the same numbers
As Bruno has said, you are looking for pseudo-random derangements. So just to add some interesting information about derangement...

11 días ago | 0

Answered
Int returns Int when decimals input
fw = ((k*l*vi)/c)*(((1+p*l)*vi)/c)^(k-1)*exp(-((1+p*l)*vi)/c)^k ; When k is some non-integer value, you are raising some non-tr...

12 días ago | 1

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Answered
How to solve linear programming problem?
Second answer, since the problem has now completely changed. Again, MATLAB is still totally unnecessary. Since you will probabl...

12 días ago | 0

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Why is it the answer from MATLAB is different from the other solving software? Where did I go wrong?
Usually when I see a confused question, where someone says "help, i got a strange answer", the reason is because they were not c...

12 días ago | 1

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Answered
Extraction of values from a cfit object
When you do not know how to pull some information from a class, the best thing is to try using methods to learn what you can do....

12 días ago | 0

Answered
Nonlinear fit to 100 data sets with seven unknown
That you WANT the residual norm to be low is not really that relevant. Pick anything you may choose to want. For example, suppos...

13 días ago | 0

Answered
How can I solve a system of many equations in 2 variables ?
I think you don't understand the concept of linear least squares, or linear regression. You have essentially a problem with 12 ...

13 días ago | 0

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Circshift function on very large array
Yes, but you need to understand that just because your mind can conceive of an idea, does not mean your computer can solve the t...

13 días ago | 2

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How do I use files from file exchange?
Download the .zip files. Decompress same. The result will be a directory. Add that directory to your search path. Pathtool is...

14 días ago | 2

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Answered
Ax-b, additional constraint
Why is it that you even think you have now 5 unknowns, not 10? Are you hoping that you can decde to fix 5 of those coefficients ...

14 días ago | 0

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Deleting an Element Modifies Other Elements
No. You are coming to a conclusion based on the wrong assumptions. It is NOT that deleting an element modifies other elements. ...

14 días ago | 2

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How can one do this calculation?
This is the perfect problem for the accumarray function. I'll add a few rows. A = [1 1 10 1 2 39 1 3 24 1 4 7 1 5 41 2 1 ...

15 días ago | 2

Answered
Polynomial to Matrix form(canonical form)
I assume the question is to resolve a quadratic polynomial, perhaps: Q = x1^2 + 2*x1*x2 + x2^2 into a quadratic form. That...

15 días ago | 0

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find index of missing data point/ extrapolatation
Use the intersections code, written by Doug Schwarz, found for download from the file exchange. I90 = 0.9*max(I); [Tint,Iint...

15 días ago | 0

Answered
How can I create a vector with constrains on Matlab?
One approach would be to construct the set of all possible sequences of length perhaps 10. seq10 = char(dec2base(0:59048,3) + 1...

15 días ago | 0

Answered
Boundaries points for Linear Programming (graphical)
You probably want to use the code plotregion, by Per Bergström. It can be found on the file exchange. https://www.mathworks.com...

15 días ago | 0

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mean value of polynominal function
The average value of a function over some interval is just the definite integral of the function, then divided by the length of ...

15 días ago | 1

Answered
Remove portion points in a square boundary
ra(all(ra >= 0,2) & all(ra<=2,2),:) = [];

16 días ago | 1

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Second order polynomial curve of best fit
You need to understand, this data is NOT something a quadratic polynomial will ever fit reasonably. plot(x,y,'o') Don't forg...

16 días ago | 0

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Numerical integration of function to determine Fourier coefficients
Of course, the limits will matter. I will guess if they include 0, for example, you may have a problem. syms k x x1 = pi/4; x...

16 días ago | 0

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Answered
solve function give a wrong solution
Just an addendum, though the answer by @Vladimir Sovkov is correct. Using round to convert those results is wrong. Instead use ...

16 días ago | 0

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Histograms - why does the smallest binsize always give the smallest mean integrated squared error?
Your error is a subtle one, but important to understand why it happens. x = randn(1000,1); xi = -5:0.1:5; histogram(x,xi,'nor...

16 días ago | 0

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Answered
How to solve the matrix K ^ -1 * F where the terms have unknowns?
If K is a 2x2 matrix, parameterized by a,b,c, F is a 2x1 vector, then do exactly what you want. syms a b c K = [14.8482*a+14.8...

17 días ago | 0

Answered
Solving a ode with multiple conditions
This is a first order ODE. You can have only ONE condition. However, if k is an unknown, then you could have TWO conditions. A t...

18 días ago | 0

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Answered
matlab integration using function
Um, no. And, yes. Sort of. Is that a good, definiitive answer? Depending on the value of b, this has a solution, or no solution ...

18 días ago | 0

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