Hello
How can I solve a system of equations for 8 equations and 8 variables?
The equations are nonlinear and parametric as below:

댓글 수: 7

Mahsa Babaee
Mahsa Babaee 2021년 2월 18일
I used "solve" in my code but it failed in finding a solution (error no explicit solution.)
Using "fsolve" is my idea but I am confused with the initial value that should be given to matlab code.
Now, what should I do?
try ones for initial values
x0 = ones(8,1);
Alex Sha
Alex Sha 2021년 2월 19일
Hi, Masha, give out all known constant such as k1, h, Lz1..., also give out your equations in text format.
Mahsa Babaee
Mahsa Babaee 2021년 2월 19일
Equations:
Variables:
Assumption:
Parameters:
I need the variables based on parameters.
Mahsa Babaee
Mahsa Babaee 2021년 2월 19일
편집: Mahsa Babaee 2021년 2월 19일
Dear Alex, I hope the latter form helps.
Alex Sha
Alex Sha 2021년 2월 20일
Hi, Mahsa, you didn't understand what i mean, for numerical computation, for example fsolve, except X1,...X9, you need to give out all values (h,k1,k2,k3,L1,L2,L3,...) .
Another, the equations you given is in picture format, not text format.
Mahsa Babaee
Mahsa Babaee 2021년 2월 28일
I appreciate your time and attention. I think that I understand what you mean. In other words I have to set values of parameters (h,k1,k2,k3,L1,L2,L3,...) for using fsolve because it just works numerically. Am I right?
But I have to find a analytical solution so fsolve doen't seem efficient! so what should I do??

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도움말 센터File Exchange에서 Systems of Nonlinear Equations에 대해 자세히 알아보기

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2021년 2월 18일

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