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Simple loop with equation problem
Looking at your code... Learn to use semi-colons at the end of your lines. This avoids crap being dumped into the command windo...

3 years ago | 0

Answered
How to plot ellipse using contour function?
I'm a little confused. You DID draw ellipses. It seems the goal was not to draw the ellipses you drew though. Essentially, as yo...

3 years ago | 0

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Problems accepting integer values with power and algebraic symbols using inputdlg
You could just learn to use the standard scientific notation. So 123e4, which represents 123*10^4. 123e4 Or, you could see tha...

3 years ago | 0

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Answered
не удалось получить пробную версию
I would advise you to contact customer service. Answers is not an official line to The MathWorks, so we cannot tell you what is ...

3 years ago | 0

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Go on my Nationale Education license after the Easter holidays
(I removed your license number from your question.) Regardless, Answers is not official customer support. Answers is just a foru...

3 years ago | 0

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What is the complexity of intlinprog
This is a question with seemingly no answer as posed. Why not? Because intlinprog will use many different methods, depending on ...

3 years ago | 0

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Solving for Variables contained an interval
syms x y = (sin(x) * (2* cos(x) - 1)) / (1 + 2 * cos(x)); xsol = solve(y == 0) There are only three primary solutions. xso...

3 years ago | 0

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I have to perform integration of very large equation in Loop
Should every possible expression you write down, long, or short, have an analytical integral? int seems to be unable to do so. O...

3 years ago | 1

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Using a variable shift to match up odd and even rows that are displaced within an image.
Many unclear things here. Ok, its mostly your image that to me was unclear. :) But then, I need new eyeglasses. Seriously, I se...

3 years ago | 1

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page-wise matrix determinant or eigenvalues
@Henry Brinkerhoff seems to have found a semi-viable solution, in the form of pagesvd. It will be valid, within a factor of -1. ...

3 years ago | 0

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Finding linear combination of two vectors such as every element is positive
Hmm. Is this homework? I wonder, but I have learned not to trust that students won't post homework, and this is a cute problem. ...

3 years ago | 1

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Answered
z=f(x,y) and w=f(x,y). I am trying to reverse the table to get x=f(z,w) and y=f(z,w).
In general, this is often impossible. That is so for good reasons too. The problem is, IF you have any instances where the resp...

3 years ago | 1

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Is it possible to access the software after annual license expire?
It is not clear what RoadRunner is or what it does. If you don't have a valid (current) MATLAB license, then you cannot "use" a...

3 years ago | 1

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Answered
Force coefficients in multivariate and multiple regression
There has been much unsaid here that I think you don't understand. Given these models: u = p*q^4*x/y v = p*q^3*x*y wher...

3 years ago | 0

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solving 4 equations with 4 unknowns
Because there are two solutions. For example, how many solutions would you expect to see for the problem syms x xsol = solve(...

3 years ago | 1

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Answered
How to create a random signal with desired frequency?
This seems simple enough. Create the signal, at the dominant frequency. That is just going to be a sine wave. Surely you can do...

3 years ago | 0

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Answered
i am studing the course "introduction to image processing through coursera platform, i updated the course dead lines however the matlab expired, i ask you help to getaccesback
I'm sorry, but there is nothing we can do. Answers is not MathWorks customer service. You should contact the provider of the co...

3 years ago | 0

Answered
Does dsolve benefit from multiple cores?
In general, no. No tools in the symbolic toolbox that I know of are currently set up to employ multiple cores. I might have miss...

3 years ago | 2

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Answered
Left division with partially known coefficient
If you have this relation, y=0.5*x/(d*K)+x^2/(d*K)^2 where d is known but K unknown, then write it as: y = (0.5/d)*(x/...

3 years ago | 0

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Integral of matrix determinant
For this specific problem, I might just suggest that the determinant of an upper triangular matrix is just the product of the di...

3 years ago | 0

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Absurd result using 'integral2' with non-"centered" functions
Why should you be surprised? Integral and integral2 are tools that look at your function as a complete black box. A black box i...

3 years ago | 0

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Using colormap to graph function of three variables
Could you? I suppose, in theory, you could. But it would not make a lot of sense. The problem is, suppose you have all different...

3 years ago | 0

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I want to make an identity matrix
These are starting to look like homework questions. Did you not read the answer to the last question you asked? You could not u...

3 years ago | 0

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I want to show r^2 and the poly1 ec on the plot
Read the help for fit! Look at the second argument it can return. You don't give me enough information (what is dtr, for example...

3 years ago | 0

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Error on spline function
Splines cannot be buit from integer data. They also cannot be symbolic. So possibly you are trying to interpolate a logical vect...

3 years ago | 0

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Answered
i want to make identity matrix
For only 3 blocks, it is simplest just to do this. A = blkdiag([1 1],[1 1],[1 1]) Or, you could do this, if you have more than...

3 years ago | 1

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Why I couldn't plot this graph f=(@(x,y) (x.^2)+(x*y)+(y.^2)<=68200.^2/3);
The issue is, tools like fimplicit do not plot inequalities. That is, if there were an equality in there, then this would be a p...

3 years ago | 0

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Can I use the file exchange program triangulationVolume publically even though it has no license?
The file is found at: https://www.mathworks.com/matlabcentral/fileexchange/15221-triangulationvolume?s_tid=ta_fx_results I see...

3 years ago | 0

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How to use binomial expansion to produce correct results?
How? Using double precision arithmetic? You often can't. You need to remember that double preciion arithmetic lives in 16 signif...

3 years ago | 0

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Answered
How small is Zero?
It is easy for that to happen. Of course, you don't actually tell us WHAT test you did. But this just means you have an event ou...

3 years ago | 1

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