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# Torsten

Last seen: Today 自 2013 起处于活动状态

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Index exceeds the number of array elements. Index must not exceed 10000.
My guess is that "Ytrain" has less than "len" elements. To confirm this, add the lines disp(len) disp(size(Ytrain)) after th...

2 hours 前 | 0

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Estoy intentando acceder a los costos de las licencias para matlab

3 hours 前 | 0

REQUIRE CODE FOR PARAMETER IDENTIFIABILITY FOR ODE BASED MODEL HAVING KINETIC PARAMETERS.

4 hours 前 | 0

% Define circuit parameters Vin_rms = 120; % V Vout = 2.4; % V Iload = 25e-3; % A Vripple = 0.12; % V R2 = 1e3; % Ohm...

14 hours 前 | 0

I am trying to get the answer for the sum to infinity for a geometric series. My output should be 3/2 and a loop should be used. I've done that but it won't work. Please help
Sum2Infinity = 0.0; for i = 0:1:10000 Sum2Infinity = Sum2Infinity + FirstTerm * CommonRatio^i; end

19 hours 前 | 0

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I cant get the correct plotting
% Given p = 7500; % kg/m^3 Cd33 = 16*10^10; %N/m^2 vp= 4620; % Ns/m Ceb = 1.43E-9; % F phi = 2.62; % As/m % Piezoelectri...

19 hours 前 | 0

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Matrix size mismatch Matlab Function
S(j) is a single value (1x1). exp(-norm(r-mu(:,j))^2/(2*sigma^2)) is a vector (50x1). You try to save a vector in a scalar val...

19 hours 前 | 0

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Help with solving a system of coupled equations of motions in time domain?
How did you come up with the sdot vector for the equations so far ? If you use a mass matrix, you simply have to add the additi...

22 hours 前 | 1

Error using odearguments ; Error in ode15s (line 153); Error in anand_shrivastan (line 625) ;below is the code
Add dZdt = dZdt.'; as last line in function "SpeciesODE".

1 day 前 | 0

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How to solve large system of nonlinear equations using fsolve?
n = 20; A = rand(n); B = @(X)X*A-X.*X; X0 = rand(1,n); X = fsolve(B,X0) % or n = 20; A = rand(n); B = @(X)quadratic(X,A)...

1 day 前 | 0

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Cannot use solver function with poisscdf function
syms lambda n eqn = exp(-lambda)*symsum(lambda^n/factorial(n),n,0,35) == 0.95; solve(eqn,lambda)

1 day 前 | 0

The inner while loop is not necessary: if flag(i,2)-flag(i-1,2) == 1, then of course flag(i,2)-flag(i-1,2) ~== -1. Thus the incr...

2 days 前 | 0

Problem during the use of 'fzero'
I'm surprised the initial value x0 is part of your function definition. Are you sure this is correct ? %% Global variables decl...

2 days 前 | 0

How to solve 2nd order BVP using Chebyshev Spectral Method?
alpha = 0.1; xmesh = linspace(0,1,50); solinit = bvpinit(xmesh, [0 0]); bvpfcn = @(x,y)[y(2);0.75/(1+6*alpha*y(2)^2)]; bcfcn...

2 days 前 | 0

MHN function MHN % Initialization of paramters beta=1.5; lambda=1.5; wt=2.5; wb=1.5; ks1=0.5; ks2=0.1; a=0.5; epsilo...

2 days 前 | 0

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optimization in smart energy management system.I have used MILP algorithm but i got infeasible solution no point satisfy the constraints.how could i sort out these issues.
I have used MILP algorithm but i got infeasible solution no point satisfy the constraints.how could i sort out these issues. It...

2 days 前 | 0

how to supply a cost function gradient based on some of optimisation paramters
Would you please tell me if there is a way to supply a gradient based on some optimization parameters and use the finite differe...

2 days 前 | 0

Nested Function is not working correctly with ode45
You can also get an analytical solution for v since your piecewise equation is easily integrated. EGA215_1234567_A1_Q2 functio...

3 days 前 | 0

Constrained Optimization Problem With Obj Function Which Is Numerical Solution To A System Of ODE's
You never use the 53 solution variables of u and v in your code. And you solve the following ODEs for u and v du/dt = u, u(0)...

3 days 前 | 0

Each element of INTCON must be an integer in the range [1 numVars], ([1 1]). What is the meaning??
f = c' * P_max + c0; % objective function is a scalar value. Thus intlinprog assumes you want to solve a problem with only one ...

3 days 前 | 1

Error using symfun/subsref (line 203) Invalid argument at position 2.
N(i) = symfun(((1/(2*A))*(a(i)+b(i)*x+c(i)*y)),[x y]); instead of N = symfun(((1/(2*A))*(a(i)+b(i)*x+c(i)*y)),[x y]); And N...

3 days 前 | 0

I have these 3 columns and I want to divide p/z and put the p/z values in a new columns
p=[2080,1885,1620,1205,888,645]; z=[0.759,0.767,0.787,0.828,0.866,0.900]; gp=[0,6.873,14.002,23.687,31.009,36.207]; new_row =...

4 days 前 | 0

How to obtained matris vector solution using fminunc function?
You will have to use fminunc three times: c_1=[3;5;8]; c_2=[2;6;8]; x1_sol = zeros(size(c_1)); x2_sol = zeros(size(c_1)); f...

4 days 前 | 0

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Applying updated initial conditions at every points of tspan and solve system of ODE using ode45
Then why do you solve for v1 if you want to prescribe it ? Simply set v1 = u0x + vp*p1 in your code and determine displacement...

5 days 前 | 0

Using lsqnonlin for deconvolution
lsqnonlin tries to adjust x, and you reset it to 0: function F=insulin(x) ... x=zeros(89,1); This destroys the complete fitt...

5 days 前 | 1

The following error was reported evaluating the function in FunctionLine update: Unable to convert expression into double array.
Your calculations partially produce complex and NaN values. And you cannot prevent this by trying to force them to be real. pv1...

5 days 前 | 0

Solve of implicity equations
You should first check whether a zero of your function really exists. It doesn't seem to be the case: alpha = 0.14; A = 3300; n...

5 days 前 | 0

why do I get this error in the simulation
Before calling "interp1", use % Sort array oxygen_energy_tot in ascending order [oxygen_energy_tot_sorted,idx_sort] = sort(oxy...

6 days 前 | 0

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ode45 with a array of vector
a1 = ...; a2 = ...; a3 = ...; b1 = ...; b2 = ...; b3 = ...; c1 = ...; c2 = ...; c3 = ...; vp = ...; tValues = linspace...

6 days 前 | 0

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function handle array Problem
result = integral(@fun,0,1000,'ArrayValued',1) function value = fun(a) m = [1,2]; U(3) = a + 2; V(3) = a - 2; for...

6 days 前 | 0

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