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How to check in which step MATALB code is running?
I tend to use things like waitbars, or some informative output that gives me a clue. For example, I have been recently running a...

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exp( ) gives unexpected answer for (2,2) input
I would bet a large sum of money that a is not exactly what you think it is. a_you_think = [1.4142 1.4121; 1.4142 1.4121]; How...

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How do I integrate LegendreP for specific values of m and n?
help legendre The legendre function evaluates the specified Legendre polynomial at the indicated points. It does not return the...

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Get one equation from two complex roots
You can use help sym/expand to force MATLAB to expand an expression that contains parens. syms s expand((s-(-9+i*3))*(s-(-9...

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"A matrix 'B' of 5x5 whose elements are all 5"
Can you create a matrix of the desired size that is all ones? (Clearly yes, since you know how to use the ones function.) Could ...

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GA - objective and constraints have to run the same expensive function
I would try memoization. help memoize For example, we can use it as in the example below. I've created a function that does li...

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Which solver can solve this equation for V. Result should be around 59. I tested the to halfs of the equation on python. Thank you for your directions in the first place.
So the second time you asked this question, you provided values for the other variables. I'll first put it in symbolic form so w...

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Hi all,I want to use matlab to calculate the exponential integral,I know that the official function ExpIntegralE in Mathematica can calculate it.
Is there a reason why you would not just use expint? help expint Probably you did not look for it. And that was what you did w...

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Is there a special Matlab function existing to check feasibility of a Point (to a Optimization Problem)
Why should there be a better way? That is, does your check completely answer the question, in a simple way, as efficiently as p...

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How to utilize caching architecture of MATLAB to speed up costly function evaluations for different inputs
Learn how to use memoize. help memoize

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How can I get the function g(x) (way to solve functional equation)
NOTHING IN your question is about MATLAB. But you already have an answer. I think you may have a misunderstanding. Is there a w...

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Making Smoother the Curve fit to Airfoil data using cscvn function
I saw your question. You don't need to direct a question at me. However, it appears you are asking how to get a sharp corner at...

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I want to find 4 constant with used 1 eq
I'd like to solve a problem just like you. Let me pretend I have been given the equation: a + b + c + d = 5 Can I determ...

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Is it possible to implement optimization algorithms, especially particle swarm, with "dynamic bounds" in MATLAB?
The fuzzy bounds you describe are not actually bounds at all, just subtle, vague hints. And code tends not to handle fuzzy hints...

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plot an eight variable function
It is easy, even trivial to do. All you need is one of those nice hyper-dimensional monitors. They are difficult to buy though, ...

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Convert striaght lines to smooth curves
Why in the name of god and little green apples are you differentiating acceleration? You need to INTEGRATE acceleration, once to...

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is there codes that helps to find out the type of the distribution ?
As Rik said, difficult to know which distribution a random variable comes from. Don't believe me? x = 0.96489; Do you know if ...

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How to get the cofactor matrix of any given square matrix (singular or non singular)?
The matrix of cofactors is moderately well posed, even when the matrix is itself singular. Of course, what you would do with it ...

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Want to add two 2D array with special condition
Easy peasy. A = [0 0 1;1 2 3; 0 0 0 ]; B = [1 2 1; 1 0 0; 2, 3, 0]; C = (A + B)./(1 + (A&B)) The trick is to look carefully ...

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slope of non linear
Are you right to use a second order difference? NO. That is not the slope, but something proportional to the SECOND derivative. ...

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Will Spanish be supported at some point in Matlab Text Analytics Toolbox?
That is a definite maybe. Or maybe not. Answers is not a direct line to the MathWorks. Those who answer a question here are doi...

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Plotting a system of nonlinear equations
Learn first that MATLAB uses log(x) as the NATURAL log, NOT ln(x). As well, learn that MATLAB does NOT use implicit multiplicat...

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How to find the integer values of the following system of equations
These are called Diophantine equations, as integer solutions are required. The square terms and products make them nonlinear. As...

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Finding an initial feasible point x0 for fmincon
Two simple rules apply. If it was easy, then all solvers would do it for you, automatically. There would never be any issues. N...

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I have a very simple markov chain and I was wondering if there is a simplified equation for times spend in each state
This is not even a question about MATLAB. And worse, this is very likely a homework problem. However, since you have gotten an a...

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Failed to add constant in the middle of a long array
I'm sorry, but you are simply wrong. It may mean that you did some other computations, or that you are confused. But this is a b...

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fminunc Converging at a strange point
This is a common mistake made by people. x varies over a moderately large range. That means the POWERS of x will get very large....

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Aligning two noisy signals
Smoothing is NOT necessary. Lacking your data to use as an example... t = 0:500; S1 = sin(t/10) + randn(size(t))/10; S2 = cos...

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Verify analytical expression: derivative of an integral with undefined function
You define a function of a variable as I do here: syms n omega phi(t) T diff(int(phi*exp(-i*n*omega*t),[0,T]),T) Looks like y...

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Three terms exponential fit without initial guess
There are a lot of misconceptions here. Can you do a fit without ANY initial guesses? No. Any nonlinear fit will use initial gu...

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