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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...

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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); ...

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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

2 mois il y a | 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...

2 mois il y a | 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]. ...

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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.

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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*...

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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...

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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...

2 mois il y a | 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')

2 mois il y a | 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) = ((...

3 mois il y a | 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-...

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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 ...

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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...

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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...

3 mois il y a | 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...

3 mois il y a | 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...

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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...

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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, ...

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

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Get mean of a matrix which has NaN in it
grades = [2,4,6; 5, NaN, 1; 7, 2,NaN] mean(grades,1,"omitnan")

3 mois il y a | 0

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Resonance in moonpool type structures
I'd change k(n) = lsqnonlin(fun_alpha, guess, x0_left, x0_right); to k(n) = lsqnonlin(fun_alpha, guess, x0_left, x0_right,op...

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Incorrect results for subtraction despite working for other use cases.
"segments_of_free_space" and "focal_lengths" (or "f" and "gaps") must have the same number of elements because you reference gap...

3 mois il y a | 0

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MATLAB Onramp: Help with Plots
The problem seems to be known: https://uk.mathworks.com/matlabcentral/answers/2178891-why-does-my-answer-to-a-task-show-up-as-i...

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Help with Solving PDE System with DAE in MATLAB
You have discretized your equations in space. Thus the y variables are only functions of time for fixed z-coordinates. Here is...

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Solving DE initial value problem symbolically in Matlab
By default, y is assumed a function of t: syms x y(t) sol(t) = dsolve('x*Dy+y=-sin(x)','y(pi/2)=0') simplify(x*diff(sol,t)+so...

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How to iteratively solve when equations are dependent on each other.
Sigma_ysrtM = load("Sigma_ysrtM.mat").Sigma_ysrtM; T_oQlast = load("T_oQlast.mat").T_oQ; K_dot_nom = load("K_dot_nom.mat").K_d...

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dispersion equation in water waves
I solve in y = x*h. Thus the result has to be divided by h to get x. k(j,n) = fzero(@(y)fun_alpha(y,omega(j)),y0_alpha)/h; The...

3 mois il y a | 0

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Difference between integral and cumtrapz.
Your input arguments to "cumtrapz" are reversed: you have to use intfx = cumtrapz(x,fx); instead of intfx = cumtrapz(fx,x); ...

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Please 🙏 help me to find the exact solution of ODE
I doubt you can get an analytical expression for y. All you can do is to transform your 2nd order ODE into a system of first-ord...

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