Sulaymon Eshkabilov
Last seen: 2 days ago
641 total contributions since 2019research interests: vibrations, optimal control, system modeling and simulation, mechatronics... coding
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Contribute at least one answer each month for 12 consecutive months
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Solve all the problems in Introduction to MATLAB problem group
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Answer 10 questions that were unanswered for more than 30 days
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Text File Read Matlab
Step 1. Data import from your txt file, e.g.: uiimport() Step 2. Save imported data Step 3. Compute the mean of the importe...
16 days ago | 0
W-M function to plot 3d fractal surfaces
Hi, Here are corrected codes of yours. One more important note that it is not a good practice to call your m-file with a MATL...
16 days ago | 2
Reading excel for for a particular date range and output the max corresponding value.
An easy solution is: sortrows()
16 days ago | 0
How can I make a sentence in Alphabetical order
Hi, Here is an easy solution to your exercise: CC='the quick brown fox'; ANS =sort(strsplit(strtrim(CC))) Good luck.
16 days ago | 0
How to find a number but if it repeats immediately after, take the first value.
Here is an easy solution to your exercise: A = [0 5 0 5 5 0 0 0 5 5 5 5 5 0 0 0]; IND = find(A==5); C = A(IND(1:5)); Good lu...
16 days ago | 0
Plotting Isotherms on a contour plot
Here is a simple solution (plot part only) to your exercise: pcolor(rot90(rot90(x)), rot90(rot90(y)), T2), shading interp Good...
16 days ago | 0
Error with equation using sym/subsindex
In your code, there are a few confusions and flaws. You've define: f(A) = x.*tan(A)-(g./(2.*V.^2.*((cos(A)).^2))).* x.^2-y; f a...
17 days ago | 0
Error - "Simulink cannot propagate the variable-size mode"
Your MATLAB fcn blck file should have: function y = fcn(u) y = 0.02559*exp(u).*sin(2*u)-0.059734*exp(u).*cos(2*u);
20 days ago | 0
Issue with plotting variables with ranges
Here is how to start this: N = 200; % Number of data points to be genearted and calculated to plot xc=linspace(0...
20 days ago | 0
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Basic Sampling question involving sampling rate and graphing
Your code has a problem with the end time value to take into calculations and display of the calculated data points. Here are ...
20 days ago | 0
Shortest path constrained to use specific nodes
Here is an easy solution: shortestpath(G, 1,3) % Shortest path between 1 and 3 Good luck.
20 days ago | 0
Open the .dat file in Matlab
You can employ a few built in data import functions of MATLAB to read your data and then save them in *.mat file. E.g: FN = 'MY...
20 days ago | 2
Using Diff() with NaN values
You can substitute all 'nan' values with 0's by locating them via isnan() and then substituting.
20 days ago | 0
How to feed additional variables into fsolve function
Here is a combined and a bit simplified solution: options = optimoptions('fsolve','Display','iter'); x0 = [150,0.045,7.5]; dv...
20 days ago | 0
How would I solve for the two unknowns with 3 equations
Here is the simple solution: SOL = solve(mr*(hfgr + (.68*cpgr* (t2-t1)))==mw*(hfgw + (.68*cpgw *(T1-T2))), F*Ao*Uo*LMTD==mr*(hf...
20 days ago | 0
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error too many input arguments
Here is the corrected one (more efficient in calculation part): kk=1:24000; xx0(kk)=exp(1i*kk*pi/16); N=20; for ii=1:N p...
20 days ago | 0
Doubt in a product erro
Here is a small correction to obtain the correct answers in your exercise: t1 = 0:0.01:300; N = 2; % Number of ...
20 days ago | 1
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Error in equation/variables
% You need to perform elementwise operation. Since Theta = [0, 120] Theta^2 % must be Theta.^2 . % missing before / o...
20 days ago | 1
How to use trapz for area under curve
The answer to your exercise is realtively simple: IND = find(Ua2<=20); AREA = trapz(Ua2(IND), reva2(IND)); fprintf('The area ...
21 days ago | 1
| accepted
How to redirect function output arguments to a cell array
If this is the case, then you'd need to convert the outputs into cell array after acquiring the outputs from the function - sill...
22 days ago | 0
Saving output of for loop after each iteration (for a function)
Here is the corrected code of yours: y = 0:0.05:1; u= 2*y-(2*y.^3)+y.^4; a = 0:0.01:1; b = 4000; C=zeros(numel(a),numel(u)...
22 days ago | 0
How to redirect function output arguments to a cell array
One of the easy and quick solution to your exercise is alike the following: OUT = sillyFunction(X); % The output is a cell arr...
22 days ago | 0
How can analyse respones in MATLAB live screen?
With *.mlx editor, you can insert a slider to assign the magnitude value of y0, w1, w2, and set the value range of t. The rest i...
22 days ago | 0
Subplot on a saved figure only working for one subplot
I presume that you have a loop before "if... end" operations, correct? You should put "hold all" command after your "plot()" co...
23 days ago | 0
convert Hexadecimal to decimal in text file
Use reshape(): reshape(DECd, 4, 6) % Because your converted data is 24 - by -1 Good luck
24 days ago | 0
| accepted
Extract and Analyse data from multiple excel files and sheets
Please go over these hints given by mathworks staff for data import from MS Excel: http://www.mathworks.com/help/matlab/matlab...
27 days ago | 0
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Plot function y=(sin(x))/x for pi/100<=x<=10pi using increments of pi/100
% Start rightaway by defining the variable x and compute it x = pi/100:pi/100:10*pi; y = sin(x)./x; % plot plot(x, y) % Yo...
27 days ago | 0
| accepted
Using ode45 to solve a Non linear ode with multiple variables?
Here is the corrected completed code: tic; tspan = 0:0.0033:100; a=55*(pi/180); b=0; k0 = [a; b]; [t,k] = ode45(@pend_k,...
28 days ago | 0
| accepted
solving BVP using anonymous function
Your four variables a, b, Ta and Tb are not defined. Pre-define their values just before your anonymous function is defined. ...
28 days ago | 0
convert Hexadecimal to decimal in text file
Here is the one of the easy solutions: FN = 'HD.txt'; % File name % Open the data file to process: ID = fopen(FN); % Scan ...
28 days ago | 0
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