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Incorrect number or types of inputs and outputs for function 'isfinite'

조회 수: 38 (최근 30일)
I want to solve this nonlinear system, but it always says in red: Incorrect number or types of inputs and outputs for function 'isfinite', and I'm a beginner I don't know how to fix it.
Could you please give me some advice? Thx.
x=fsolve('@system',[0 0])
Incorrect number or types of inputs or outputs for function 'isfinite'.

Error in fsolve (line 306)
if any(~isfinite(fuser))
function f=system(x)
f=[2*x(1)+x(2)+x(1)^3; x(1)+x(1)*x(2)+exp(x(1))];
end

채택된 답변

Florian Bidaud
Florian Bidaud 2023년 9월 7일
편집: Florian Bidaud 2023년 9월 7일
You need to remove the quotes
x=fsolve(@system,[0 0])
Equation solved. fsolve completed because the vector of function values is near zero as measured by the value of the function tolerance, and the problem appears regular as measured by the gradient.
x = 1×2
-0.3783 0.8108
function f=system(x)
f=[2*x(1)+x(2)+x(1)^3; x(1)+x(1)*x(2)+exp(x(1))];
end

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