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Finding non trivial solution for a system of equations
This is called a Homogeneous linear system of equations. They are explicitly linear in the unknowns C1 and C2. What that means...

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Should this Symbolic Limit be Zero?
Sometimes I wish these tools could tell us where they are stumbling in the solution, when they get stuck. For example, suppose ...

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How can I get the zero crossing contour of a matrix
help contourc For example: v = linspace(-5,5,100); [x,y] = meshgrid(v,v); z = x.^2 - y.^2 + 1; % The contours will be hyperb...

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Plotting problem of function in one variable and four known parameters
Does it not tell you the problem? x = 1:5; For example, what do these two operations do in MATLAB for the vector x? x.^2 x^2...

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Taylor Series Figures of e^x
Ok. Now that you have changed the function to one that actually looks like the desired expression... :) My test would be one to...

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How do I find the expected value of power in random variable?
There is no simple formula (that does not involve an integration) to compute the expected value of the square of a random variab...

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if statement inside of a Function is working only in certain conditions
You don't understand how an if statement works on a vector. For example, what happens when I do this? Surely, in terms of the co...

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Random permutation of integers from 1 to n without repetition but for large n
Almost always, when I see someone wanting to solve a problem in this way, it means they are trying to use brute force, thus a br...

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No feasible solution in optimisation in linprog
I posted a question recently to help explain some of the reasons when linprog fails. You should read my first answer, as it disc...

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How may I split a matrix into two based on 0/1 of the first column?
If you will split it into only two matrices, then use named variables as you wish. If you wanted to split it into multiple parts...

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String array of the letters of the alphabet
alf = 'a':'z' It also works for caps. ALF = 'A':'Z'

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Query about dirac delta function
It seems pretty clear. help dirac So dirac(2,w) is the second derivative of that function, at w. yes, I know how can you diffe...

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what does pc1 and pc2 represent?
For example... load fisheriris whos [COEFF, SCORE, LATENT] = pca(meas); So the first component is huge compared to the other...

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How can I use Newton’s Method when I have a 2D domain?
Don't write code for Newton's method, when you can use fzero. Just put a loop around it, and call fzero for each pair of dC/dx a...

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How plot the average sum of three dices versus the number of experiments?
Simple. 3 (fair, so unbiased) dice, numbered 1:6 on the 6 faces. (Not one of those gaming dice with 20 faces or so.) Done over ...

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Minimize a function with special constraints
If linprog tells you the problem is unbounded, then it is. What does that mean? Unbounded means there is some direction you can...

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Combinations with a condition
Easy enough. x = 0:6; [x1,x2,x3] = ndgrid([0 3 6]); x123 = [x1(:),x2(:),x3(:)]; ind = ismember(sum(x123,2),3*x); x123(ind...

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automatic circles that enclose clusters of similar data something like lineCoeff = polyfit(x, y, n) (regression line)
incircle has nothing to do with your problem. Sorry. You would first want to use some sort of clustering algorithm on your dat...

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fminsearch does not minimize my function
Probable user error. Various possibilities exist, the most common are: Your function is improperly coded, so it does not do wha...

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symsum and a divergent series
Is it possible? Well, yes. And, sometimes, no. But you can always use Mathematica. What else can I say? When symsum returns a ...

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LINPROG requires the following inputs to be of data type double: 'f'.
Apparently some or all of the arguments to LINPROG were not doubles. Which ones? In your code, we see this: yp= @(x) x*trareg1...

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How to find the angle between two hyper planes?
Will you please learn to use arrays? You have moved from 2-3 to now 6 dimensions in your questions. When you are one day trying ...

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Is there any Matlab finction to compute an integration using Rmberg method?
Not exactly. For example, if you look up Romberg integration, you will find it is based on Richardson extrapolation, but at leas...

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Excel Solver least squares vs MatLab optimization
fminsearch is never a tool you want to use if you want any kind of strong convergence. Sorry. But comparing anything to fminsear...

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Problems with the parallel inversion of a large, sparse and linear system in Matlab
You should NEVER be inverting a large sparse linear system. The result will generally not be sparse, so you will then gain nothi...

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curve fitting using least square method form equation , y = (1 + a sin(2x))/ (b + cx^2) where a, b, c are unknown real constants.
Hint (since this is homework): What is your model? WRITE IT DOWN. What happens when you mutiply by the term in the denominator? ...

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TriscatteredInterp on a multi-core computer
A long dead question. But even today, you won't easily find tools like triscatteredinterp, or griddeInterpolant, that will work ...

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Solving a 2nd order ODE for specific parameters
Did you try it? What did you try? For example, I started with what you said. YOU CANNOT use ODE45 to solve a problem where the p...

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difference between Matlab v7.9 and v6.5
which abstractAngleConv -all That is part of the mapping toolbox, but not something that is accessible directly to a user. So y...

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adjusting the peak of a spline in curve fitting
Um, you are not being very clear here, probably because you don't totally appreciate what you are asking. Certainly you have not...

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