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In my code, I am getting plot on lambda=1, but rest plots are not reflecting. Please help to get all figures.
The results for the last 3 values of lambda are NaN (see above) - thus they are not plotted.
2 días hace | 0
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Wanting all results for an algebraic equation that is within a function .
One method: Define the algebraic variables as additional solution variables to the ODE system. This results in a DAE-system (i....
3 días hace | 0
pdepe fails to solve PDEs with absorbing boundaries
This is what I get from AI when I type in your error message: This error occurs because a third-party package (usually MatCont)...
10 días hace | 0
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different in Poisson distribution test
"kstest" is not applicable since the Poisson Distribution is a discrete, not a continuous distribution. Since the example "Test...
13 días hace | 1
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Find all roots of a transcendental equation
Quite a hack and no guarantee that you will find all roots in the specified region, but I think there is no better method for th...
18 días hace | 0
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How to use the "Use weights for each response" option on simbiology model analyzer on a Fit program?
Did you study the example "Use Group-Specific Dosing Data for Parameter Estimation with Numeric Weights" under https://uk.mat...
25 días hace | 0
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Saving a matrix with a variable that could take any value
Either define the matrix as a function handle SM = @(L)[12/L^3 6/L^2 -12/L^3 6/L^2; 4/L -6/L^2 2/L 6/L^2; ...
27 días hace | 1
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Save variable number in matrix for later iteration
Maybe like this ? I'm not sure whether you want to take the elements of C and J according to the order of the elements in I or...
29 días hace | 1
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How to solve dy/dt=A(t)*y where y is a vector (3 elements) and A is 3x3 matrix with time dependent elements.
The code should somehow look like: Y0 = [1;0;0]; tspan = [0 1]; v1 = ...; % your first vector v1 needed to compute A v2 = ....
30 días hace | 0
Please help me to run this simple code
Your solution for rr(3) becomes complex-valued. For complex-valued functions, you can plot e.g. their real part, their imagina...
alrededor de 1 mes hace | 0
How do I add summation to a symbolic equation in order to integrate across set bounds?
Use logncdf: https://uk.mathworks.com/help/stats/logncdf.html Use to compute f_act with the help of "logncdf" and use the ...
alrededor de 1 mes hace | 1
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Implicit expansion with arrayfun (cpu vs gpu)
F3 = cellfun(@myadd, [{x}], [{y}], 'UniformOutput', false) will work. Arrayfun tries to apply "myadd" to [first element of x,f...
alrededor de 1 mes hace | 1
Inverse Problem, I have unknowns to solve it
L and N cannot be estimated separately. As long as phi is a single scalar value , L*phi + N must be treated as only one parame...
2 meses hace | 0
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expanded vs unexpanded polynomials in symbolic integrals
Without giving the limits of integration, "int" returns an arbitrary antiderivative for the function you want to integrate. But ...
2 meses hace | 0
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symbolic integrate and plot a function of one variable
syms x(u) y(u) g(u) C1 C2 v uref g(u) = 159648450049389632/(3991211251234741*(4 - (C1 + 2*u + 3)^(1/2))^(1/2)) + 14; x = C2*ex...
2 meses hace | 0
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Trying to make a goal seek like program using fsolve?
clear all; close all; clc f= @(x) Average1(x)-65; engineering= 30; % Intiall estimate engineering = fsolve(f,engineering) ...
2 meses hace | 0
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numerical Instabilities for bessel functions
Although it's slow, the full Newton method seems to work in this case (except for one value of X_kRE): clear all; close all; ...
2 meses hace | 1
i want to add cplex and yalmip on my mac how ?
This is the problem-based MATLAB code to set up your problem. I might have done some mistakes translating your constraints, but ...
2 meses hace | 1
Setting constraint between estimation parameters in nonlinear grey box estimation
I doubt that you can set lower and upper bounds on parameters as nonlinear functions of other parameters. In my opinion, Paramet...
2 meses hace | 0
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Help implementing 4th-order Runge–Kutta for ODEs with Dirac impulses (discontinuous system)
Look at figure 3 (a) and (b) of the article. Each time the curve for U becomes discontinuous, a dosing is applied to the mice. I...
2 meses hace | 0
Defining a function in one file and using it in a second file
The calls must be for i = 2:NumTimesteps % for each timestep % 1. Soil Respiration % as per Reich, 2002 SoilResp_gC = S...
3 meses hace | 0
real part of eigenvalues vs damping plot
I don't know what you try to plot, but the cell matrix lamda below should contain all information you need. mr=306, mj=141.5, m...
3 meses hace | 0
First value of an array does not display with a decimal
If you like it more, you can use sprintf('%f %f %f',[x, y, z]) instead of disp([x y z]);
3 meses hace | 1
How to integrate a control system by ode45 with PID control input ?
Add a second differential equation dV/dt = P.Xd - X with initial condition V(0) = 0 Then V(t) = integral_{0}^{t} (P.Xd -...
3 meses hace | 0
Matlab's polyfit gives different results when the independent variable is integer than when the independent variable is floating point. Why is that so?
To be consistent, you must either use numDataPointsMinutes = [0,1,2,3, ... 27359]; instead of numDataPointsMinutes = [1,2,3, ...
3 meses hace | 0
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How to remove the time dependence of an equation?
Use fimplicit(eq_14(t)==0,"r","LineWidth",2) instead of fimplicit(eq_14==0,"r","LineWidth",2) Why do you use a time-dependen...
3 meses hace | 0
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Seeking advice from experts
Use one of the below codes instead. You can't nest functions within a script, but only within another function. So either defi...
3 meses hace | 0
Newtonian Mechanics vector solution needed to find the range of forces (P) that satisfy Fnetx = 0
Your search will never find a value for P for which Fnetx is exactly 0. Better use "fsolve" to solve for the corresponding roo...
3 meses hace | 0
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can anyone help me. I am getting error of the following problem
Let's ignore the fifth differential equation in your code for a moment. Then you set up code for the differential equation y''...
3 meses hace | 1
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Monitoring Variables Defined Within Functions to Debug
After the variable is computed, you can list the variable's name by itself on it's own line in your function code, with no semic...
3 meses hace | 0
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