solve a system of integral equations with matlab
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Hi every body
I wrote the attached code to solve the integral equations written in the image.But I have a problem with matlab error
Can anyone help?
function S = Integralsystem(x,va,vb,t,xa)
x=1+int(va,t,0,t)+int(vb,t,0,t)
va=1.2*int((4/x^2-0.5/xa^2),t,0,t)
vb=(4/3)*int((3/x^2+.5/(x+xa)^2),t,0,t)
xa=70-int(va,t,0,t)
s=fsolve
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/685288/image.jpeg)
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Torsten
2021년 7월 17일
If you differentiate all your equations with respect to t, you get a system of differential equations that can be solved by standard Matlab software (like ode45, ode15s etc.).
추가 답변 (1개)
Jayant Gangwar
2021년 7월 15일
You need to pass the complete system of non linear equations to fsolve as input argument along with start conditions, just calling fsolve will not process anything. For information on how to pass a system of equations to fsolve please go through it's documentation, I've attached the same below
Also you can take a look at the following ML answer
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