using fsolve with nonlinear equations arise in loops

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salman yazdani
salman yazdani 2019-6-30
评论： salman yazdani 2019-6-30
Consider the following problem
Agg=@(co) [co(1)+co(2)-3; co(1)-co(2)-1];
r=fsolve(Agg,[0 0 ]);
This solve the system and obtain the results easily. But if we want the Agg function calculated in a previous loop e.g from an algebraic equation so I can not define variables as co(1) co(2) etc.
the problem get the form
co=sym('co',[1 2]);
Agg(1)=int(...)
Agg(2)=int(...)
r=fsolve(Agg,[0 0 ]);
but this dont work as Agg takes the form [co1+co2-3; co1-co2-1] but matlab needs to be [co(1)+co(2)-3; co(1)-co(2)-1].
What should I do to rplace co1 by co(1). subs and others dont work as co is not define befor

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采纳的回答

Matt J
Matt J 2019-6-30
r=fsolve(matlabFunction(Agg),[0 0 ]);

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