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Yuriy Yerin


Last seen: 7 months ago |  Active since 2018

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The appearance of infinity in the problem with finding the minimum of a function
I want to find the so-called "efficiency" of a function, defined as the ratio of the difference of the absolute values of the ma...

9 months ago | 2 answers | 0

2

answers

Question


Error with the animation of the surface plot
Hello I want to perform a surface animation, but I constantly run into an error Error using surf Data dimensions must agree....

9 months ago | 2 answers | 0

2

answers

Question


Integro-functional equation (numerical solution)
Hello everybody. Matlab is great at solving differential equations numerically for instance with the ODE45 solver. Is it possib...

2 years ago | 0 answers | 0

0

answers

Question


Extraction data from several implicit plots
Hello everybody. I'd like to extract data from the figure of two plots of implicit functions in the form of txt file according ...

3 years ago | 0 answers | 0

0

answers

Question


Matrix dimensions must agree in a function with the sum
Hello everybody. Sorry for a stupid question but can't resolve this problem. How can I avoid the error "Matrix dimensions mus...

3 years ago | 0 answers | 0

0

answers

Answered
plot Landau cylinder and sphere
The problem was solved by means of the code function z=cylinder_plot r=linspace(5,0.1,7); for i=1:7 [x,y,z] = cylinder(r...

4 years ago | 0

Question


plot Landau cylinder and sphere
Hello everybody. I'd like to plot the so-called Landau cylinder in Matlab with number of internal cylinders, something like in...

4 years ago | 2 answers | 0

2

answers

Question


Increasing accuracy of Whittaker functions
Hello. I know that there were a lot questions devoted to accuracy of fslove procedure. I'm trying to solve a transcendental e...

4 years ago | 0 answers | 0

0

answers

Question


Plot implicit function with the summation inside
Hello. I'm trying to plot an implicit trancendental function with the summation inside the expression. Here my code: function ...

5 years ago | 1 answer | 0

1

answer

Question


fsolve and fimplicit give different results
Hello. I know there are a lot of questions about nonlinear solver fsolve but I'd like to ask and simultaneously share my experi...

6 years ago | 0 answers | 0

0

answers

Question


Creating arrayfun with two variables
Hello. I'd like to create cell array with results of a function S for variables and , which is defined in a code below. fun...

6 years ago | 1 answer | 0

1

answer

Question


Calculation of integrals and summation with an error "The following error occurred converting from gpuArray to double: Conversion to double from gpuArray is not possible"
Hello. I try to reduce the time for the performance of the following code using Parallel Computing Toolbox function z=tes...

6 years ago | 1 answer | 0

1

answer

Question


Plot of the function after integration
Hello. I want to plot a complicated function. Unfortunately at the end I obtain just one point of the function and the empty gr...

6 years ago | 0 answers | 0

0

answers

Question


How to avoid multiple integration of the function and speed up calculations?
Hello. I'm dealing with with the code, where I have to integrate complicated function S(q,k) over q. Then I have to make summat...

6 years ago | 0 answers | 0

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answers

Question


Different answers for the result of integration and summation
Hello. I'd like to get the result of this expression for k=1 and m=1 <</matlabcentral/answers/uploaded_files/124089/Expr1.jp...

6 years ago | 0 answers | 0

0

answers

Question


How to speed up calculations of integral and summation
Hello everybody Regarding to my previous <https://ch.mathworks.com/matlabcentral/answers/406219-error-using-sum-invalid-data-...

6 years ago | 1 answer | 0

1

answer

Question


Error using sum Invalid data type. First argument must be numeric or logical.
Hi everybody. I try to make integration over the variable q for the expression with inside integration and summation and find...

6 years ago | 1 answer | 0

1

answer

Question


plot function with parameters
Hello everybody. I'd like to plot the function y=y(x) which is defined by the expression <</matlabcentral/answers/uploaded_f...

6 years ago | 0 answers | 0

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answers