Answered
Index exceeds the number of array elements. Index must not exceed 2.
F1 and F2 are scalar values if you define them as you do in your code. Thus F1(x(n)), F2(x(n-1)) makes no sense. Further x(n) a...

4 years ago | 0

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How do I move the center of my cyclinder to a specific point?
r = 5e-7; [X,Y,Z] = cylinder(r); h = 20e-7; Z = Z*h - 2*r; cyl = surf(X,Y,Z,'FaceColor','none'); rotate(cyl, [0 1 0], 90)

4 years ago | 1

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Answered
How to optimize a function below a given value?
Use OutputFcn to stop the optimizer manually: https://de.mathworks.com/help/matlab/math/output-functions.html

4 years ago | 0

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Index exceeds the number of array elements (24)
clear all clc T=24;%hour P_pv1(1,1:T) = 270; P_pv2(1,1:T) = 140; P_pv3(1,1:T) = 120; P_pv4(1,1:T) = 150; E1(1,1:T) = 7; ...

4 years ago | 0

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Answered
How to generate a random set of x,y coordinates
xmax = 0.4; xmin = 0.2; zmin = 0.2; zmax = 0.32; xrand = rand(1,400); xinit = xmin + xrand*(xmax - xmin); zrand = rand(1,4...

4 years ago | 0

Answered
use fmincon with 0<x1<x2<x3
Strict inequality is not possible. If you are satified with <= instead of <, use -x1 <= 0 x1 - x2 <= 0 x2 - x3 <= 0 o...

4 years ago | 4

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Answered
How can I write an objective function with its constrain for optimization?
Put your unknowns in a vector x. Write your function to be maximized as f*x where f is to be determined from your above problem...

4 years ago | 1

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Answered
Index exceeds the number of array elements. Index must not exceed 1.
You use Em(k) and Em * (k) in this line of code. Both cannot be correct, I guess. Further check out whether E(k) is correct: E ...

4 years ago | 0

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Answered
How can i use different solvers like ga, patternsearch, particle swarm etc in problem based Mixed integer Linear Programming
MATLAB chooses the solver that is most appropriate (usually means: fastest) for your problem. Why solving a linear optimization...

4 years ago | 0

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Non trivial solution to a linear system
However whenever I use the A\B command to solve the system I get the trivial solution x=[0 0 0 0 0]' and I am told that this sol...

4 years ago | 0

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How do I mulltiply a complex conjugate vector by its second derrivative (also complex) to get a real number?
I don't know why psi*psi'' should be real, but here is a method to avoid shortening "psi". psi = [0.0100 + 0.0172i 0.0106 + 0...

4 years ago | 0

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How do I get these two equations to work in scenarious like this
As far as I know, MATLAB won't perform algebraic manipulations before substituting variables or algebraic expressions. As an ex...

4 years ago | 0

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Need help debugging code
Your input matrix is missing in the call.

4 years ago | 0

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Answered
Index exceeds the number of array elements (24)
Delete the line for t=t+1 and the corresponding end And why do you set P_pv1 = 270; P_pv2 = 140; P_pv3 = 120; P_pv4 ...

4 years ago | 0

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combining varying uneven matrices
m = min(size(A,1),size(B,1)); A = A(1:m,:); B = B(1:m,:);

4 years ago | 0

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Unable to assign a vpasolve result from a for loop
For D = 0, there is no solution for k. And why do you solve for H0_t3 ? If Hb does not depend on H0_t3, the equation for H0_t3 i...

4 years ago | 0

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Answered
possible to reduce the relative difference for CheckGradients in optimization (fmincon)?
Why not just turning off the CheckGradient feature if you are sure your derivatives are correct within a certain error tolerance...

4 years ago | 0

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How to color the space between ellipse?
v = -6:0.001:6; % plotting range from -5 to 5 [x y] = meshgrid(v); % get 2-D mesh for x and y cond1 = x.^2 + y.^2/4 >= 1; %...

4 years ago | 0

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How to plot each term of a sum?
The curves seem to be almost identical. y_p = [0.478 3.218 6.322 9.451 12.586 15.724 18.863 22.002 25.143 28.283 31.424 34.565 ...

4 years ago | 0

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Answered
How do I apply an operation to certain elements in a row vector (that are less/more than a given value)
for k=1:A for i = 1:numel(x) if (0 <= x(i)) && (x(i) <= Va(k)) Q = Vb(k)*(1-(Va(k)/L))*x(i); el...

4 years ago | 0

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Answered
Matlab Matrix calculation coming wrong
% Strain calculation gauge1 = [700;300;500;500]; gauge2 = [700;300;300;700]; gauge3 = [300;700;700;300]; fig = figure; su...

4 years ago | 0

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How to find minimum value and its corresponding variables for a large dataset?
@Kishore Write a function that returns Kpe1 given delta1, theta1, kh, kv and alpha1. Then you can vary the independent variable...

4 years ago | 0

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'sym' returns val = k11
As you can see, there are 36 equations for 12 variables. A solution only exists that approximately satisfies the equations. sym...

4 years ago | 0

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Answered
Matrix distribution into two vectors that build similiar matrix as a vector product
But you already got the answer for the two vectors a and b and the resulting approximating matrix C: [u s v] = svd(M); n = 1; ...

4 years ago | 0

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Piecewise Function Surface Plot
Hint: The function can be defined as fun = @(x,y) (2*x+2*y^2)*(x+y^2>=0 && x+y^2<=1) + (x+y^2+2)*(x+y^2>1 && x+y^2<=2);

4 years ago | 0

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why do I receive ode15s error?
clc clear close all %Data k = 247; % W/mK rho = 2710; % kg/m^3 Cp = 900; % J/kg...

4 years ago | 1

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Answered
how can I plot graph of differential equations with matrix?
No mistake. MATLAB is simply not able to find an analytical solution. Instead of "dsolve", use a numerical ODE integrator, in th...

4 years ago | 0

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How to find minimum value and its corresponding variables?
Add the following two lines at the end of your code: [~,idx] = min(Results(:,5)) all_values = Results(idx,:)

4 years ago | 0

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Answered
How do I get the second solution?
Pr = 1; %fixed lambda =-1.1; %mixed convection parameter (lambda) a = 0; b = 10; % b = infinity solinit = bvpinit(linspa...

4 years ago | 0

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loop on matrix array
The following code computes the distance between the columns of M. M = [0 3 -1 4 6 13 -2 0 4]; D = squareform(pdi...

4 years ago | 0