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Question
Specifying du/dx in pde toolbox error
I am trying to solve an elliptic PDE but it has a first order partial derivative w.r.t x, but in PDE specification, it has to be...
presque 13 ans il y a | 1 réponse | 0
1
réponseNonlinear fit to multiple data sets with shared parameters
I think to fit the data set, you can try to use least square method, that is to minimize the error between calculated value and ...
presque 13 ans il y a | 0
Selecting the correct output.
If you want to the difference, eg. the tenth column and the start price, I think that it can be done with 1. define start pric...
presque 13 ans il y a | 0
| A accepté
Question
Bvp4c spherical type
Hi all, I want to solve BVP of the _spherical-type_ form : y'' = y' / x^2 + g(y) using bvp4c, and one of the boundary valu...
plus de 13 ans il y a | 1 réponse | 0
0
réponseQuestion
MuPad and Symbolic Toolbox Error
Hi, i want to ask a question about MuPad. I am beginner using MuPad, I am trying to solve a coupled of ODE as follow using Mu...
plus de 13 ans il y a | 1 réponse | 0
1
réponseproblem with fmincon to optimize ISE for pid tuning using Bode s ideal trunsfer function
I don't think that the tranfer function can be used as constraint, and one other think, your script cannot be read well!
plus de 13 ans il y a | 0
fminsearch
I think that you can try to save your file using the filename "f.m" (equating your function name in function definition". And tr...
plus de 13 ans il y a | 0
Transfer function
if you want to try simulate the response of that transfer function with step or ramp function, you can try defining that TF with...
plus de 13 ans il y a | 0
| A accepté
solve command
Are you trying to solve a system of linear equations? I found difficulties in using solve. If you want to solve linear equations...
plus de 13 ans il y a | 0
Is there any function other than Fsolve to solve systems of nonlinear equations ????
I agree with Friedrich, to test, you can see the value of your equations using: [yout, fval ] = fsolve('function',guess). wh...
plus de 13 ans il y a | 0
Optimization problem
I can't help you since I don't understand your problem. But after reading your explanation, I think that you have to write a M-...
plus de 13 ans il y a | 0
Question
two systems of coupled elliptic PDE
Hi all, I have a question about solving a system of coupled elliptic PDE, and sadly, it is usually highly nonlinear. What is the...
plus de 13 ans il y a | 1 réponse | 0
1
réponsefminsearch
i think that one of your errors is writing the function. the function should use different name for output variables.
plus de 13 ans il y a | 0
Question
ode error
Hi all, i want to ask about my M-File. I cant run this code i made function dGdW = PBR(W,Y) global yao Fk0 Q0 T...
plus de 13 ans il y a | 1 réponse | 0
1
réponseHelp using subfunction to compute zeros of a function
you can use fzero or fsolve to solve the problemm but it is necessary that you change initial guess to get 3 roots.
plus de 13 ans il y a | 0
