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Pareto frontier plot error
In both examples, the two objective functions are not "competitive" since both have (0/0) as optimum combination for x1 and x2 i...

fast 3 Jahre vor | 0

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Application of any numerical root finding method (secant, bisection, etc.)
Plot first, then solve by using the approximate root as initial guess: Cs = 0; d = 0.5; g = 9.81; %User definition of input ...

fast 3 Jahre vor | 2

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It's a question of finding a static integral There's an error in the formula
integral(@(x)(x+2)./(x+1).^3-exp(-3*(x+3)),0,3) If you cannot input a mathematical formula in MATLAB, I suggest you invest 2 ho...

fast 3 Jahre vor | 0

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How do I solve an equation with an unknown variable?
I always use pencil and paper: v=70 ; ro=1.225 ; Sw=5 ; c=0.5 ; CM_ac = -18/(0.5*ro*(v^2)*Sw*c)

fast 3 Jahre vor | 0

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Creating 'n' matrices with each one with 'n' in its name
YEAR{n} = zeros(DATE_RANGE(n,3));

fast 3 Jahre vor | 0

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Matlab double sum over vectors
Note that -pi<=kx<=pi, -pi<=ky<=pi, -pi<=kx'<=pi, -pi<=ky'<=pi because of your linspace choice. And most probably you need to n...

fast 3 Jahre vor | 0

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Solving symbolic third order polynomial
syms t t0 t1 q0 q1 q0dot q1dot a0 a1 a2 a3 f(t) = a0 + a1*(t-t0) + a2*(t-t0)^2 + a3*(t-t0)^3; df = diff(f,t); S = solve([f(t0...

fast 3 Jahre vor | 1

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The number of rows in A must be the same as the number of elements of b error
% Define the coefficients of the objective function as a double vector c = -[-6, 3, 17, 10, 63, 34, 15, 22, -2, 15, ... ...

fast 3 Jahre vor | 0

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Problem with Curve Fitter 95% CI Upper and Lower Bounds' Equations
Have a read here: https://uk.mathworks.com/help/curvefit/confidence-and-prediction-bounds.html It will show you the difference...

fast 3 Jahre vor | 1

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Error using barrier Objective function is undefined at initial point. Fmincon cannot continue.
If you insert the line augmented_objective(x0) before the call to fmincon, you will see that your objective returns a complex ...

fast 3 Jahre vor | 0

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Solving Pde equation with pdepe solver
If you use the PDE Toolbox, you can define 3d-geometries - if it's that what you mean.

fast 3 Jahre vor | 0

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Function 'quadprogIP' runs fast seperately but extremely slow in a for loop simulation
Maybe the problems to be solved get larger or more complicated within the for loop so that the average time spent for each probl...

fast 3 Jahre vor | 0

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Function "diff" and the loss of an element in the array
Use "gradient" if you don't want to loose elements: https://uk.mathworks.com/help/matlab/ref/gradient.html

fast 3 Jahre vor | 2

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solve ode with ode45
Comment out t = [0 5] before calling ode45 in the loop: %t = [0 5];

fast 3 Jahre vor | 0

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Why does solving my equation result in the message "No complex subexpressions allowed in real mode."?
Next time, please report the real problem right at the beginning. %loading the constants eps_w = load('eps_w.mat'); eps_w = e...

fast 3 Jahre vor | 0

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I want 4 solid lines for Fr paramter . but im getting single line why?
S_a() function S_a %%%%note%%%%%%%%% %%%%%%%%%%%%%%%%% decreasing behaviour with F...

fast 3 Jahre vor | 0

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two layer transient conduction heat transfer with pde
The boundary condition for pdepe reads p + q*f = 0. In your case this leads to hr_int * (urMax - ul) + k1*k1/(rho1*Cp1)*dT/dx...

fast 3 Jahre vor | 1

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solve a second-order differential equation using finite differences, I keep encountering the 'Index exceeds the number of array
Replace your functions by p.m % p.m function result = p(t) result = 2 * t ./ (1 + t.^2); end q.m % q.m function re...

fast 3 Jahre vor | 0

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Why does solving my equation result in the message "No complex subexpressions allowed in real mode."?
Why don't you simply solve for pw ? pw = (eps_exp^(1/3) - eps_l^(1/3))/(eps_w^(1/3)-eps_l^(1/3)) Note that you use eps_w^(1.3)...

fast 3 Jahre vor | 0

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for loop in bvp4c i get circle in plotting not solid line why?
sss() function sss global Fr Pr f2 f1 shi2 shi3 lambda zeta Sk u Re Kf B A H1 H2 H3 C1 C2 C3 P1 P2 P3 K1 K2 K3 Kb n Z ...

fast 3 Jahre vor | 0

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Please help me in solving the given coupled differential equation? Please also tell me the numerical recipe availabe in matlab for handling such equations.
MATLAB has no tools to solve this kind of equations. I guess they are hyperbolic in nature - so take a look at CLAWPACK: https...

fast 3 Jahre vor | 0

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Solve differential and algebraic equation system
S_1 and q_j are symbolic functions. You have to convert them to numerical functions first (by "MatlabFunction") to use them with...

fast 3 Jahre vor | 1

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Trouble printing more than one set of data on plot after solving system of odes
Call ode15s three times: the first time to compute the solution for A and R with M(1), the second time with M(2) and the third t...

fast 3 Jahre vor | 1

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Trouble printing more than one set of data on plot after solving system of odes
Call ode15s three times: the first time to compute the solution for A and R with M(1), the second time with M(2) and the third t...

fast 3 Jahre vor | 0

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Please help me solve this material balance
This is a typical problem for MATLAB's "pdepe". So I suggest you use this integrator for partial differential equations.

fast 3 Jahre vor | 2

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Error function optimisation method to calculate the velocity of a travelling wave
For each of the 200 times, extract the node number where your solution equals 0.5. Plot node number as a function of time. The s...

fast 3 Jahre vor | 1

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How do I find a conditional pdf?
Generate random numbers for l0 and l2 that follow the distributions given. Duduce l1 and use histogram to plot its pdf. Look up...

fast 3 Jahre vor | 0

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Find all possible roots of transcendental function
Really all zeros ? Then you cannot save them in any array since for each u and xi, you get an infinite number of them. Is the fu...

fast 3 Jahre vor | 0

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Why does the command window say "Array indices must be positive integers or logical values" when this code is executed?
Maybe you mean (p*(r/12)) instead of (p(r/12)) ?

fast 3 Jahre vor | 0

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Different Nonlinear Equality and Inequality Constraint Tolerances
No.

fast 3 Jahre vor | 0

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