Answered
How do you solve a system of 16 nonlinear equations with 16 unknowns ?
Whenever we see a number supplied to FOUR significant digits, we should expect that is not the true value, but only an approxima...

2 years ago | 1

Answered
How to do bit-wise operations on symbolic variables that may be very long possibly larger than inter 64
Why is there a problem? Just define the numbers as syms. Make sure that you don't make the mistake of computing 2^n as a DOUBLE....

2 years ago | 0

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Answered
Roots of a 4th degree polynomial and plotting a graph
Effectively, you are telling us that one of the coefficients of the polynomial is determined to within some interval. And now yo...

2 years ago | 0

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What is the Distinction Between Answers and Discussions?
@Paul, your question really is arguably more suitable for a discussion. I'd suggest the rule(s) should be: If it is a question ...

2 years ago | 2

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Answered
How to find all the intersecting points between 4 spheres ?
There will generally be no common point of intersection between all 4 spheres, so where all the spheres intersect. Of course, yo...

2 years ago | 2

Answered
I got x as a result of the symbolic equation solver!
syms n p1 lambda delta v N F B n=(delta - B*delta + 2*delta*v + (4*B*delta - 4*delta - 8*delta*lambda + 8*delta*p1 - 8*delta*v ...

2 years ago | 1

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Why more CPU cores makes parallel workers less efficient?
I'll assume the process really can be perfectly parallelized, so that you can break the problem down into multiple fully paralle...

2 years ago | 0

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How to find the coordinate of the point on (180) contour line when y(max)?
Easy. Use contourc to find that specific contour. It will be a piecewise linear curve. Find the point where y is maximum. That...

2 years ago | 0

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Fit distribution using moments
This is something commonly done using either the Pearson or Johnson family of distributions. (It has been many years since I loo...

2 years ago | 0

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Answered
Understanding higher dimension in MATLAB
Visualize a vector. For example, the vector V = 1:5 So the numbers 1 through 5, stored in sequence in memory. Got it? rand wil...

2 years ago | 0

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I am using the symbolic tool box and have generated a number that has over 25,000 digits and would like to store that number in it's entirety onto a disk file.
Is that really an extremely large number? :) Everything is relative. X = sym(17)^20000; Xc = char(X) numel(Xc) Xc is just a ...

2 years ago | 3

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ANFIS code in matlab
No problem. It appears the anfis function is written in MATLAB itself, and not compiled. If it was compiled code, then no, they ...

2 years ago | 0

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Problem in mishgrid and contour function
This is not even a probable user error. A CERTAIN user error. You have done something wrong. Nobody knows what, since you have...

2 years ago | 0

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How to solve Ax=b with some all knowns except some x values
I think you may be missing some very important pieces of information. The example you show is a homogeneous one, where a non-tri...

2 years ago | 1

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difficulty solving simulataneous equations
You have 3 equations, and you calim to have 4 unknowns. However, you only tell solve that you want to solve for TWO unknowns, ia...

2 years ago | 0

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Answered
How to find the largest cuboid inside a set of points in 3D?
Can a corner of the cube stick out between some of those points? If that is acceptable, you NEED to say so, because it would com...

2 years ago | 0

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Determine intersection between plane and polyhedron
Um, not too hard, as long as the polyhedron is convex, so perhaps a convex hull. If it is not convex, then it is more difficult....

2 years ago | 0

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Answered
Interpolation schemes that produce positive second derivatives of the interpolant
Are there easy adjustments? Not really. At least not totally trivial. It sounds as if you want an interpolant, NOT an approximan...

2 years ago | 0

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the size of picture show three data?
A black and white image typically has one channel only. All you need to know is how bright each pixel is. But a color image st...

2 years ago | 0

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Answered
Fast calculate the inverse of a lower triangular matrix
Do not write your own inverse code. Gaussian elimination is great for teaching a student about matrices, but too often they then...

2 years ago | 0

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Plotting perpendicular lines but they are not perpendicular.
Both @Stephen23 and @Voss have explained the issue perfectly, so I am just adding some additional information to clear things up...

2 years ago | 2

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How to find the equation of the data available of a graph?
I'm sorry, but high order polynomials (as suggested by @akshatsood) are always a bad idea. You will run into numerical problems ...

2 years ago | 3

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Integral with limit variable
Multiple ways to solve this. First the easy, just as a numerical integration using a trapeziodal rule. beta=2.1; eta=1500; t=...

2 years ago | 0

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Finding a common step value between an array of non-uniformly distributed points
This is generally impossible to do exactly, IF your numbers are floating point. Let me repeat, effectively impossible. If your n...

2 years ago | 3

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Answered
matlab strange result for mean of single vs double
You need to understand what you did, AND you need to understand floating point arithmetic. a=single([99 100 65 101]'+zeros(4,51...

2 years ago | 3

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find similar numbers within a matrix
Lots of good answers posted. I did not see this one. load M.mat size(M) The array M has 61 rows. P = [-3.4970900e+01 -2.02...

2 years ago | 1

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Is there any way to convert the matlab code into a flow chart
As @Teresa Hubscher-Younger said, this is not for Stateflow to solve, not the purpose of that tool. Instead, you might try the M...

2 years ago | 0

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Answered
can any one help me to find empirical equation with 3 or 4 parameters for this data, And of course with different parameters for each curve
Sadly, while you want some magical form for each of these curves, that is not so easy to find. Essentially, it looks like each o...

2 years ago | 1

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Questions about operation A\B
The only time when there would/should ever be any significant difference is if the matrix is singular. And in that case, there w...

2 years ago | 1

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Is there a built-in function to concatenate arrays in the third direction?
Logically, one would just use cat. How might you have found this? READ THE HELP! That is, near the end of the help for all MATL...

2 years ago | 0

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