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Plotting sum of two vectors
%Parameters or =0.2; oc = 0.2; gamma = 0.01; gam=0.01; Gamma = 1; Gamma1 = Gamma; Gamma2 = Gamma; Gamma3 = 9/10; Gamm...

6 mesi fa | 0

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ilaplace doesn't handle tanh()
You mean syms s T P2 = ilaplace( 1/s*(exp(s*T/4)-exp(-s*T/4))/(exp(s*T/4)+exp(s*T/4)) ,s); Tsteps = 0.1:0.5:20; num = vpa(su...

6 mesi fa | 1

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Fitting 8 equations simultaneously with three parameters
If all 8 equations are linear in the fitting parameters like in your example from above, "lsqlin" instead of "lsqnonlin" would b...

6 mesi fa | 2

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Partial Differential equation: Createpde. f as afunction
Take a look at the example "Coefficient Handle for Nonconstant Coefficients" under https://uk.mathworks.com/help/pde/ug/pde.p...

6 mesi fa | 0

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Neumann boundary condition in a diagonal matrix
For fun, I computed eigenvalues and eigenfunctions for the full region with boundary condition u = 0 and for the quarter region ...

6 mesi fa | 0

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Neumann boundary condition in a diagonal matrix
The Laplace operator is discretized as (u(x+h,y) - 2*u(x,y) + u(x-h,y))/h^2 + (u(x,y+h) - 2*u(x,y) + u(x,y-h))/h^2 If y = 0 an...

6 mesi fa | 0

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Error while running my objective function by fmincon with nonlinear constraint for calculate optimization coordination overcurrent relay
So far, it seems to work. The constraint function is missing. % main_optimization.m % The main script for solving protective...

7 mesi fa | 0

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Please help explain it
1) asks you to plot y1(x) = x + cos(x), y2(x) = -0.5 and y3(x) = 0.5 and see where y1 and y2 resp. y1 and y3 intersect. 2) a...

7 mesi fa | 2

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I'm encountering the following error when I run my main program.
Do you see the problem ? a = rand(4,5) a(1:3,4:6) "ymax" is bigger than the second dimension of the array "topo", namely 1440...

7 mesi fa | 0

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Rotate 3D mesh plot to show 2D view of X data on vertical axis and Z data on horizontal axis
x = -2:0.1:2; y = 0:0.1:1; [X,Y]=meshgrid(x,y); Z = X.^2+Y.^2; mesh(Z,Y,X) xlabel('Z') ylabel('Y') zlabel('X') view(0,0)...

7 mesi fa | 1

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Matlab numerical simulation for ode system by changing the parameter value in range graph not running error coming
Your ODE system is stiff. Use "ode15s" instead of "ode45". The reason for the error you receive seems to be that you interrupte...

7 mesi fa | 1

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function input arguments error
Don't use isreal as a variable name: isreal is a MATLAB function that you overwrite this way. [y, is_real] = myquad(1, -2, 1); ...

7 mesi fa | 0

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How to assign the multiple outputs of a function to a single vector AVOIDING TO MANUALLY ASSIGN EACH OUTPUT?
https://uk.mathworks.com/matlabcentral/answers/1808900-multiple-outputs-of-a-function-into-a-single-vector

7 mesi fa | 1

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define 300 function calls x1(t)---x300(t)
You shouldn't use the way described here https://uk.mathworks.com/help/symbolic/solve-semilinear-dae-system.html to define a D...

7 mesi fa | 0

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Solve Semilinear DAE System
I am not sure what Y is in these two lines. Y is the (numerical) vector of unknowns - in the example Y = [x,y,T,dx/dt,dy/dt]. ...

7 mesi fa | 0

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Getting an empty figure for ( amplitude vs rotor speed)
You get amp = NaN as result, and NaN values are not plotted.

7 mesi fa | 0

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Calculate expm(m*A*t/n) from expm(A*t/n)
Your question is how to get expm(c*A) given A for a scalar c. Diagonalize A such that A*V = V*D. It follows that (c*A)*V = V*...

7 mesi fa | 0

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Gradients not recorded for a dlnetwork VAE
Did you read the documentation on how "dlgradient" is to be applied ? https://uk.mathworks.com/help/deeplearning/ref/dlarray.dl...

7 mesi fa | 0

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Access Denied to a folder created by the script
You create C:\Users\HP\Documents\MATLAB\Simulations\Sim_DOA_-60deg as a folder. But WriteOpenEMS(Sim_Folder, FDTD, CSX); a...

7 mesi fa | 1

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How do I get bold formatted subscript mathematical expressions in MATLAB using LaTeX?
x = 0:10; y = x; plot(x,y) xlabel('$g_{\mathbf{\mathit{R}}}$','interpreter','latex')

7 mesi fa | 0

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Help with Difference Equation in MATLAB
If V_i, h_i, C, K and theta_0 and theta_1 are given, you can solve for theta_(i+1) and compute theta in a loop. theta(i+1) = ((...

7 mesi fa | 0

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Integrations of Bessel functions
For the first integral I_1, see https://math.stackexchange.com/questions/393399/integral-of-product-of-bessel-functions-of-the-...

7 mesi fa | 0

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Risposto
Solving linear system of equations
I think you mean %Parâmetros x=0; del=0; al1=0.707; oc=0.3; Gamma1=1; Gamma3=1; g1=1/100; %Matriz a ser diagonalizada ...

7 mesi fa | 0

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Calculate eigenfunctions to known eigenvalues
https://en.wikipedia.org/wiki/Inverse_iteration You could also try null(A-lambda*eye(size(A))) where lambda is a given eigenv...

7 mesi fa | 0

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Deactivate trial toolbox and reactivate on another machine?
This is AI's answer under "Google": To use a MATLAB toolbox trial on a new computer, you'll need to deactivate the trial on th...

7 mesi fa | 1

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TCC Connection design matrix
You can code it with V and C being sparse. For simplicity, I used full matrices. n = 50; V = zeros(n); s = zeros(n,1); V(1,1...

7 mesi fa | 0

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Unexpected results using SVD to separate components that make up a function
Others have already explained why you cannot recover p1, p2 and p3 from an SVD of p = p1 + p2 + p3. All you can do is write p...

7 mesi fa | 0

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How can i get to get this curve in red when the vector is moving? The curve results from the displacement of the tip of the vector
% Définir les vecteurs de la base O (i, j, k) i = [1; 0; 0]; % Vecteur i j = [0; 1; 0]; % Vecteur j k = [0; 0; 1]; % V...

7 mesi fa | 0

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Error plotting orbits figure
Seems that most of the missing functions are available under http://www.rotordynamics.info/ (Software for Lateral Vibrations, ...

8 mesi fa | 0

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Counting the number of increments in a vector
x = 0:0.1:7; numel(x(x<=3))

8 mesi fa | 0

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