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how to convert vectore to function before integral
Your code contains a few potential errs that have been corrected. %% Q1part1 T0=20; T1=5; t=linspace(-5, 55, 601); w0=(2*pi...

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Second derivative of a function handle
Hi, Here is a corrected and more efficient solution to your exercise. clc clearvars syms zp(t) a b c D = 5; % Damping fac...

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problem plotting 3d function
Hi Here is the corrrected code. theta = linspace(0,pi); phi = linspace(0,2*pi); [theta, phi]=meshgrid(theta, phi); delta ...

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3-Dimensional Matrix and Standard Deviation
Hi, Here is a relatively simple solution for the standard deviation calculation: D = DATA; % DATA of size: X-by-Y-Zs, wher...

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Line in my graph is not connected in a simple graph, how can I make the plot and line exist in the graph?
x=[0 1 3 5 7 9 23 27 31] y=[2.3 2.22 1.92 1.6 1.52 1.07 0.73 0.5 0.45]; plot(x,y,'k*-', 'linewidth', 1.5), grid on, shg

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How can I fix the heterogeneities of Gaussian curvature ? Surfature function
Hi, Decrease the mesh size a bit that should enhance the color distribution. Or scale up your data.

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How do I find Rsquared?
Hi, Here is the quick solution: % Starting point x0 = [10;10;10;10]; F = @(x) (x(1) + x(2)*tanh((x(3) - T0)/x(4)) ); Fo...

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two coherent and two correlated signals in Matlab
Hi Sadiq, Here is a short script that demonstrates and shows if there is a coherence and correlation between the two generate...

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How I can find one of boundary of integral with figure with known integral result ??
Hi, Here is an easy solution to this exercise: D = readtable('C:\Users\sulay\OneDrive\Documents\MATLAB\data.csv'); DATE = D...

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Issue with sine graph
Hi, If you're trying to plot the weight ratio explained in your previous post, that has to be up to 30 degrees. Thus, you'd n...

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Why is errorbar plotting returning error when all inputs are doubles?
Hi, You have overlooked the conversion into date. Here is the corrected solution code: clc; clearvars D=xlsread('datafile....

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How to do operation between number inside two cell
Hi, Here is the simple solution to your exercise: clc D1 = load('climatology.mat'); D2=load('daily.mat'); LAT = D1.nu_tab...

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Simulink hw problem, set different initial values and set equal to 0
This one is a more unified simulation Simulink model of 2nd order ODE exercises with no external force applied case scenario.

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How to create a Gaussian Curve over a Bar Plot created by Histogram?
Hi, (1) You need to read the data of your image being processed, imread() (2) Convert data into single or double precision for...

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How to save output of for loop (table) into excel sheet?
Hi, There are several errs in your code, k = 1:5 not 1:365. In your case writetable() is not the best option to employ with y...

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How to merge data’s of multiple dot mat files in one dot matfile (one table)
Hi, Here is a simple solution: for ii=1:4 FN= strcat(['x' num2str(ii-1)], '.mat'); D=load(FN); ...

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vertical dimensions mismatch ode45
Hi, While defining your fcn handle, you have omitted several empty spaces that created additonal elements in your fcn handle ...

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How to create an animation between 3 points
Use drawnow.

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Cumulative sum for a certain condition with a starting and ending point
Your code runs, imports some data from MS Excel file, computes something, and at the end produces some errs due to empty outpu...

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Plotting mathematical functions in matplot
In MATLAB, you can plot it using: y=@(x)((1-x).^3-2); fplot(y, [-1, 5]);

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How to plot separately figures?
Here are the plot parts as you were aiming to get: ... subplot(2,1,1); plot(t, x, 'b', t, xn, 'r'); grid on legend('Original...

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Removing Noise from sound wave using fft
Hi, Did you perform the followings: ... n = length(t); % Time Fhat = fft(F, n); % FFT of F signal PSD = Fhat....

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Resuelto

subtract central cross
Given an n-by-n square matrix, where n is an odd number, return the matrix without the central row and the central column.

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Remove entire row and column in the matrix containing the input values
Remove the entire row and column from the matrix containing specific values. The specified value can be a scalar or a vector. Fo...

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frame of the matrix
Given the matrix M, return M without the external frame.

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Given a matrix, swap the 2nd & 3rd columns
If a = [1 2 3 4; 1 2 3 4; 1 2 3 4; 1 2 3 4]; then the result is ans = 1 3 2 4 1 3 2...

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Sums of cubes and squares of sums
Given the positive integers 1:n, can you: 1. Compute twice the sum of the cubes of those numbers. 2. Subtract the square...

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How to read RGB values from each block after running this code?
Here are the calculations missing in your code to compute mean, std of R, G, B, etc. ... % just for tutorial purposes. r...

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ode45 solver errors with time-dependant forcing/parameters
There are a few flaws - major and minor ones. (1) size of t has to be consistent to perform all calculations. (2) Fmat has to...

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How to find the derivative of this Lyapunov function?
You have overlooked a couple of points V does not contain Kx_hat,Kx, Kr_hat, Kr variables and thus, no need to introduce: DKx...

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