Dmitry
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Question
The problem with calculating multidimensional integrals
The problem with calculating multidimensional integrals. I'm trying to calculate my integrals and plot a graph, but it gives me...
environ 2 mois il y a | 1 réponse | 0
1
réponseQuestion
The code speed is too slow
I need plot(z, W_res) but my code is incredibly slow and I can't do it. How can I make the code faster so that it can calculate...
environ 2 mois il y a | 1 réponse | 0
0
réponseQuestion
how can I calculate my expression with double integration?
how can I calculate my expression with double integration? at startup, I get an error: Operator '.*' is not supported for oper...
environ 2 mois il y a | 2 réponses | 0
2
réponsesQuestion
Integrating a complex function
I want to count such an expression: This function depends on "D", and "k" is why I'm doing the integration. The sum is here b...
6 mois il y a | 1 réponse | 0
1
réponseQuestion
The program is too slow
I have data that I process with my code, but this data is too big and my program does not work, but for a smaller amount of data...
10 mois il y a | 1 réponse | 0
0
réponseQuestion
working with an array
I have a program that cuts out points from a two-dimensional vector that are at a distance 'd' from each other. The program star...
12 mois il y a | 1 réponse | 0
0
réponseQuestion
Optimization problem for curve fitting
I have two vectors that represent the coordinates of the graph by x 'dv' and y 'tv' (the same gn_nach) - this is a graph of a ...
environ un an il y a | 1 réponse | 0
0
réponseQuestion
Unable to perform assignment because the indices on the left side are not compatible with the size of the right side.
My code doesn't work, it gives me an error: "Unable to perform assignment because the indices on the left side are not compatib...
environ un an il y a | 1 réponse | 0
1
réponseQuestion
The problem of plotting
I make a curve fitting selection for a set of points and build a graph that includes: a set of points for which the fitting is p...
environ un an il y a | 2 réponses | 0
2
réponsesI need code for processing of table data
I will try to explain with an example: we start from B2, if mod(B2 - B3) < 0.404 we delete A3B3 and continue to compare B2 with...
environ un an il y a | 0
Question
I need code for processing of table data
I have a table of values I need in it only those rows of values for which the values of the number in the second column are at a...
environ un an il y a | 3 réponses | 0
3
réponsesQuestion
selection of graph points
I have a code that builds level lines for my function of two variables, I need to leave out of these points only those for which...
environ un an il y a | 1 réponse | 0
0
réponseQuestion
How to plot a graph correctly?
I have a function of two variables F(t,d) and am building a plane, and I want to plot a function where F(t,d) - C_2=0, I use fun...
environ un an il y a | 2 réponses | 0
2
réponsesQuestion
Solution of the equation
We have such a function: We set the array d = [10:10:10000], d(i) is substituted in and equated to the constant C_2, i.e. we ...
environ un an il y a | 1 réponse | 0
0
réponseQuestion
Solution of the equation
We have such a function: We set the array d = [10:10:10000], d(i) is substituted in and equated to the constant C_2, i.e. we ...
plus d'un an il y a | 1 réponse | 0
1
réponseQuestion
Plotting the function by the points that need to be determined
It is necessary to plot F(t) by points. The function F(t) is a sum from 0 to nD(t)(nD is the upper limit of the sum) which depen...
plus d'un an il y a | 2 réponses | 0
2
réponsesQuestion
It is necessary to sum the functional sequence F(t) by 'n', while at each step of summation it is necessary to take 'n' from another array n(t).
It is necessary to sum the functional sequence F(t) by 'n', while at each step of summation it is necessary to take 'n' from ano...
plus d'un an il y a | 1 réponse | 0
1
réponseQuestion
During calculations , a constant is obtained instead of a function
I have a complex function that depends on 'd' and 'n' F(n,d) I need to sum a series over 'n' and plot F(d). I know that after ...
plus d'un an il y a | 1 réponse | 0
0
réponseQuestion
How to sum up the functional sequence correctly?
I have a complex function that depends on 't' and 'n' F(n,t) I need to sum a series over 'n' and plot F(t). Ef = 2.77*10^3; Kb...
plus d'un an il y a | 1 réponse | 0