How to use fsolve to solve a set of nonlinear equations in two variables?

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Sarath S 2021-1-1

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https://ww2.mathworks.cn/matlabcentral/answers/706538-how-to-use-fsolve-to-solve-a-set-of-nonlinear-equations-in-two-variables

评论： Sarath S 2021-1-1

I am attempting to use fsolve to solve a set of equations in X & Y as given below:

Here, the terms B33,B35,B55,C1 and C2 are also functions of X. I tried to use fsolve as explained in the documentation here. How do I make sure that fsolve uses the modified value of B33,B35,B55,C1 and C2 during each iteration? I have attached the .m files. Any help would be much appreciated.

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Matt J 2021-1-1

I see nothing wrong with the way you've done it.

Sarath S 2021-1-1

Thank you! I was a bit confused since the result I was getting did not match with some previously verified values. I believe the mistake must be in the actual expression itself. Must have typed out a wrong factor or something. Anyways, thank you again.

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