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Fitting nonlinear noisy data
This is something I recall reading about many years ago. Nonlinear least squares in the presence of high noise is a classically ...

5 years ago | 0

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Answered
Solving an Improper Integral
Think of it like this. Do ALL problems you might pose to a computer have a solution? If so, then I might try solve('Peace ...

5 years ago | 1

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Find range of values of independent variable so the dependent variable is in a certain range
No. Given a completely general nonlinear function as a black box, so you cannot see inside the box, just pass in values, the ans...

5 years ago | 0

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Please Help - How do I solve this for M
You need to understand that solve is a solver that will produce an analytical solution if possible. And this apparently reduces ...

5 years ago | 0

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How to transform matrix V? (A = V*F*inv(V))
If a solution exists to the problem, you finding it in a fully robust way using the transformation A*V == V*F may be problematic...

5 years ago | 2

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Graph of a truss
Just plot each line segment using line, where you define the end points of the segments. You can provide a color spec for each s...

5 years ago | 0

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binary quadratic optimization under linear constraints
How is this not just a linear least squares estimation of the two unknown parameters? There is nothing binary about this, except...

5 years ago | 1

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how can I linear interpolation without using function
Simple. just use interp1. You are not allowed to use interp1q. But interp1 is not interp1q.

5 years ago | 0

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Curve on specific X and Y coordinates
x = [429.245/3, 303.996/3, 287.771/3, 267.384/3, 252.095/3,239.755/3,224.149/3,201.129/3,0,-198.87/3, 222.745/3,237.498/3,249.83...

5 years ago | 0

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I want to solve the equation find metric
Sorry, but your question makes no sense mathematically. H is 64x199. Frf is 100x5. So H*Frf is 64x5. No problem there. Both mat...

5 years ago | 1

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Why is this output nothing and what can i change to make it work
I had to laugh at your statement that there is nothing wrong with the code. That seems counter to the fact that it produces noth...

5 years ago | 0

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Answered
fminsearch curve fitting HELP!!
You use sl in places in your code, yet you never defined sl. Yes, that is a lower case L, not the number 1. My guess is you mean...

5 years ago | 0

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Solving system of 8 non-linear equations
This is a nonlinear homogeneous problem, in the sense that the all zero solution "works". See that if x5==x6==0, then the logs g...

5 years ago | 0

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Integrate z where z=xy
Why does this seem obvious? Yet, the result that you seem to want is incorrect. syms z x y zint = int(-2/z,z) subs(zint,z,x*...

5 years ago | 0

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Answered
Unifrnd generates a large number of uniform distributions. Is a part of it still uniform？
Short answer: Yes. Long answer: yyyyyeeeeeessssssss. Think of it like this: These numbers have the property of beeing iid. Ind...

5 years ago | 0

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Answered
Jacobi Method in calculating solution, number of iterations, and relative residue
If you think your code runs slowly, an important thing you want to do is look at the profiler tools in MATLAB. help profile Do...

5 years ago | 0

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Is there a way to suppress output, given a condition, from within fprintf?
Could you do it? Well, probably. You would need to construct some pretty elaborate conditional operations inside the fprintf. ...

5 years ago | 1

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My code is returning complex numbers
What value of x yields cos(x) == 2? It might be the new math, but I don't recall any common values of x, such that cos(x) is ev...

5 years ago | 0

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Fzero for Colebrook Equation
What you do not understand is that function have their own workspaces. If you create thse variables outside the function, then c...

5 years ago | 0

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Answered
Is it possible to include New Algorithms In reinforcement learning toolbox
There is no question about MATLAB in this. Answers is not customer support, nor is it the place to post feature requests. And no...

5 years ago | 0

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Determine polynomial coefficients so that it's roots lie on the unit circle
This seems simple enough, though the result may not seem terribly pretty. Brute force often has that result. syms a b z P = ...

5 years ago | 0

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Generate an iteration to determine the characteristic polynomial of several matrices
What can you do? Learn to use MATLAB properly. Here, that means to learn to use matrices and arrays, especially cell arrays. A...

5 years ago | 0

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Numerical analysis. Can't use syms, if not the aproximation is different.
This is numerical analysis. Hey, you are supposed to know this! Well, maybe the goal of the problem is to teach you these facts....

5 years ago | 0

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Is it possible to automatically output many possibilities using a loop?
What you want to do does not seem to make a lot of sense, nor how you will get those initial factors. But I'm sure you have some...

5 years ago | 0

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find a point on a graph
You COULD approximate the curve with some function. Best to choose one that can be intelligently extrapolate. Then since you nee...

5 years ago | 0

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define N as the number of eigenvectors needed to capture at least "99.9" of the variation in d
Lets see. Do you know how to compute what is the total variation? I hope so! Call it totalVar. What is 99.9% of that number? to...

5 years ago | 0

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New Matlab release vs updates
Are they the same? No. You can look at the release notes to see what changes were made, and to decide if anything in there is im...

5 years ago | 0

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Cosh of a variable
You do it by writing much like what you did, but in the proper order, and using proper syntax. For example, using symbolic tools...

5 years ago | 1

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Answered
2 Variables and 2 Unknowns Returning Incorrect Results
This is a linear system of two equations in two unknowns. The solution is unique, since the sysem is full rank. If we look at yo...

5 years ago | 0

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Is it possible to find a seed to generate given set of integers?
Even for short sequences, finding a seed that would recover a given sequence will potentialy be difficult and it would strongly ...

5 years ago | 0