Taniadi
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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...
nästan 13 år ago | 1 answer | 0
1
answerNonlinear 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 ...
nästan 13 år ago | 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...
nästan 13 år ago | 0
| accepted
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...
mer än 13 år ago | 0 answers | 0
0
answersQuestion
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...
mer än 13 år ago | 1 answer | 0
1
answerproblem 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!
mer än 13 år ago | 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...
mer än 13 år ago | 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...
mer än 13 år ago | 0
| accepted
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...
mer än 13 år ago | 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...
mer än 13 år ago | 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-...
mer än 13 år ago | 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...
mer än 13 år ago | 1 answer | 0
1
answerfminsearch
i think that one of your errors is writing the function. the function should use different name for output variables.
mer än 13 år ago | 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...
mer än 13 år ago | 1 answer | 0
1
answerHelp 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.
mer än 13 år ago | 0
