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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...

約1ヶ月前 | 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 ...

約1ヶ月前 | 0

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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...

約1ヶ月前 | 0

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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...

約1ヶ月前 | 0

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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...

約1ヶ月前 | 0

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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...

約1ヶ月前 | 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,...

約1ヶ月前 | 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...

約1ヶ月前 | 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...

約1ヶ月前 | 0

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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...

約1ヶ月前 | 0

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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...

約1ヶ月前 | 0

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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...

約1ヶ月前 | 0

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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, ...

約1ヶ月前 | 0

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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...

約1ヶ月前 | 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...

約1ヶ月前 | 2

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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...

約1ヶ月前 | 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...

約1ヶ月前 | 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...

約1ヶ月前 | 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...

約1ヶ月前 | 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...

約1ヶ月前 | 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)

約2ヶ月前 | 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...

約2ヶ月前 | 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...

約2ヶ月前 | 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...

約2ヶ月前 | 0

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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...

約2ヶ月前 | 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...

約2ヶ月前 | 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...

約2ヶ月前 | 0

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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...

約2ヶ月前 | 1

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Need help with a system non-linear equation with three variables
Simple. Use lsqnonlin. There will almsot certainly be no exact solution. All you can do is find a parameter set that minimizes ...

約2ヶ月前 | 1

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read text file to get complex number
Read the files in as two vectors. There are many tools that can read a text file. Then add them, multiplying the second by sqrt...

約2ヶ月前 | 0