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Getting Error Codes, not exactly sure what they mean or how to fix them, please help
% Define circuit parameters Vin_rms = 120; % V Vout = 2.4; % V Iload = 25e-3; % A Vripple = 0.12; % V R2 = 1e3; % Ohm...
Getting Error Codes, not exactly sure what they mean or how to fix them, please help
% Define circuit parameters Vin_rms = 120; % V Vout = 2.4; % V Iload = 25e-3; % A Vripple = 0.12; % V R2 = 1e3; % Ohm...
約9時間 前 | 0
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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
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
約14時間 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...
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...
約14時間 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...
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...
約14時間 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...
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...
約17時間 前 | 1
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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".
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".
約19時間 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)...
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)...
約23時間 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)
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日 前 | 0
回答済み
Very slow function, excessive overhead?
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...
Very slow function, excessive overhead?
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...
1日 前 | 0
回答済み
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...
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...
1日 前 | 0
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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...
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...
1日 前 | 0
回答済み
Magnetized Hybrid Nanofluid Flow , MATLAB Code has some problem. Please help to Rectify. Highly Appreciated
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...
Magnetized Hybrid Nanofluid Flow , MATLAB Code has some problem. Please help to Rectify. Highly Appreciated
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日 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...
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日 前 | 0
回答済み
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...
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日 前 | 0
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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...
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...
2日 前 | 0
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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)...
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日 前 | 0
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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 ...
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日 前 | 1
回答済み
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...
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日 前 | 0
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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 =...
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日 前 | 0
回答済み
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...
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日 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...
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...
4日 前 | 0
回答済み
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...
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...
4日 前 | 1
回答済み
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...
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日 前 | 0
回答済み
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...
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日 前 | 0
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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...
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日 前 | 0
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ode45 with a array of vector
a1 = ...; a2 = ...; a3 = ...; b1 = ...; b2 = ...; b3 = ...; c1 = ...; c2 = ...; c3 = ...; vp = ...; tValues = linspace...
ode45 with a array of vector
a1 = ...; a2 = ...; a3 = ...; b1 = ...; b2 = ...; b3 = ...; c1 = ...; c2 = ...; c3 = ...; vp = ...; tValues = linspace...
6日 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...
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日 前 | 0
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i want to solve a set of homogeneous linear equation
Or use the following code to produce an optimal solution in the least-squares sense: A =1.0e+04*[6.6064,-3.5642,0,0;-3.5642,6.6...
i want to solve a set of homogeneous linear equation
Or use the following code to produce an optimal solution in the least-squares sense: A =1.0e+04*[6.6064,-3.5642,0,0;-3.5642,6.6...
6日 前 | 0
回答済み
is there any way to get a 2nd order polynominal through 2 points(each end point)
rng("default") syms a b c x y n = 30; % number of data points xdata = sym('xdata',[1 n]); % x values ydata = sym('ydat...
is there any way to get a 2nd order polynominal through 2 points(each end point)
rng("default") syms a b c x y n = 30; % number of data points xdata = sym('xdata',[1 n]); % x values ydata = sym('ydat...
6日 前 | 0
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Error using plot Vectors must be the same length
As you can see above, S and f have a different number of elements. So they cannot be plotted against each other.
Error using plot Vectors must be the same length
As you can see above, S and f have a different number of elements. So they cannot be plotted against each other.
7日 前 | 1
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