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how to use lsqcurvefit on a function that contain a series
You only have ONE data point. xdata=420; ydata=0.1; So only ONE piece of information! How do you intend to estimate TWO param...

alrededor de 1 mes hace | 0

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how does this work some clarification
Honestly, this Cody answer is one of the reasons why I think Cody is seriously flawed. It encourages people to write obscene cod...

alrededor de 1 mes hace | 1

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Alternatives to syms?
Well, it is pretty old, but you COULD just use my sympoly toolbox. ;-) It is on the FEX for free download. (Pretty old by now, b...

alrededor de 1 mes hace | 2

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Critical points of level curves
But what question about MATLAB are you asking? You have plotted the surface. and the level curves. And your code was correct to ...

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Having -1 as part of the result when factoring a polynomial
You should understand that a factorization is not unique when you get down to a factor of -1. Yes, it may seem strange, but even...

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how can i make ga to reproduce specific result?
No. You cannot enforce that GA will find any specific result. It appears you understand that GA may find different local solutio...

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Given a taylor series of a function f, how do I get the original function f
You CANNOT do so. I'm sorry, but you are asking the impossible. Looking at it another way, the solution is absolutely trivial. W...

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Gauss seidel method not working for sparse matrices
Um, don't use Gauss-Seidel? It is not that this matrix is sparse. (In fact, it was not even created as a sparse matrix. Sparsit...

alrededor de 1 mes hace | 0

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Can using 'angle' to find S21 phase shift ever be done incorrectly?
Hint: Learn about ATAN2, why it exists, and what it does differently. Use of atan gives a 2 quadrant arc tangent. The point is,...

alrededor de 1 mes hace | 0

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How to find a sequence from a txt file?
strfind does NOT read a string from a file! You did this: % Open the file fileID = fopen('cDNA1-1.txt', 'r'); % Rea...

alrededor de 1 mes hace | 0

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Solving large number of equations
This is not even a remotely large number of equations. Will you please learn to use matrices? X8 appears in only one form in y...

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Expected value with maximal domains
At the VERY least, you have chosen to MULTIPLY the two terms, instead of dividing them. Assuming you really wanted to form a rat...

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MATLAB does not run on new iMAC
You do not say what OS version you have on the iMac, though I can guess, since you say it is a new iMac. The problem is most li...

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Will Quality of Documentation be better in 2024 Products?
If there is something specific that you think was lacking, then it is your responsibility to tell TMW what was missing. Don't ju...

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How to get mesh used by integral function adaptive quadrature
Nothing stops you from recording the points sent into your integration kernel. Save them in a persistent variable, for example, ...

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Are the rules for element by element matrix operation changed?
Long ago, in a galaxy far, far away, we all used to use repmat to work with arrays of different sizes like that. Our code was go...

alrededor de 1 mes hace | 1

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How can I ignore (delete) unwanted peaks of a continious signal?
Just choose some point where the curve should have settled into its long term nominal state. That should be at or about a time o...

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I keep this fuzzy function error; "Undefined function or variable 'fuzzy'."
In keeping with a question about the fuzzy toolbox, my response is an oldie, but moldy. That is, do you actually have that toolb...

alrededor de 1 mes hace | 0

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lines that meet each other
I think you have what is really a simple question. But you need to formulate it in mathematics, and that is often difficult with...

alrededor de 2 meses hace | 1

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problem in curve fitting using summation of sine functions
I'll post this as a separate answer, so as to not get it lost in the comments, and since I will show you how to solve it as a tr...

alrededor de 2 meses hace | 0

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problem in curve fitting using summation of sine functions
Ok. Thank you for the data. The plot does help a lot actually. At first glance, the plot of the fit itself looks quite reasonabl...

alrededor de 2 meses hace | 0

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Why R square value is coming negative ?
Actually, not. R^2 can be negative for two potential reasons. If the R^2 was computed incorrectly. If the model is worse than...

alrededor de 2 meses hace | 0

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I am trying to plot a graph of two variables z1 and z2 versus t. but for some values of t I am getting z2 values negative in a graph. How to make these z2 values zero?
Another approach... z2 = randn(1,7) z2 = max(z2,0)

alrededor de 2 meses hace | 0

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ODE45 giving complex solution unexpectedly
This seems clear. The only way in your code you can generate complex numbers is by raising a negative number to a fractional pow...

alrededor de 2 meses hace | 2

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optimization doesn't carry out using fgoalattain
Sigh. So many times this same question gets asked. :) Clearly not your fault of course, given the number of others who trip over...

alrededor de 2 meses hace | 1

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What is the most cost effective way for an individual researcher to purchase fast compute for deep learning tasks?
No matter what, I would be looking towards a desktop machine. Then you get the advantage of adequate fans to keep those cores hu...

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some problem about the discrete of the first derivative operator
It is difficult to know, not without reading the article. Is the D matrix as shown just a typo that got by the proofreaders? Ve...

alrededor de 2 meses hace | 1

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How to recover original raw signal from filtered results given filter coefficiencies?
Is it possible? NO. Sorry. Mathematics does not give you a trash can, where this operation can be undone. Information content wa...

alrededor de 2 meses hace | 0

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Inverse of a symmetric matrix consisting of submatrices is desired.
This makes little sense as you write it, AND it will be essentially impossible to perform in MATLAB using symbolic tools. syms C...

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Solving equations using Newton-Raphson method for 7 equations with 7 variables
As @Torsten said, this is a LINEAR system of equations. Nothing nonlinear needed. In fact, you can use many tools in MATLAB to t...

alrededor de 2 meses hace | 1