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put a vector in the form f(x)+g(x)u

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edamondo
edamondo 2016-11-2
Hello,
I have symbolic variables x1,x2,x3,x4,x5,x6,x7,x8 and u.
I have a vector [3*x1^2+2*sqrt(x3)+x1*x2*u;x5*x_8^2+u*sqrt(x5)*x2^2+5*x1] I want to have a way to put these kind of vectors automatically in the form f(x1,x2,...,x8)+g(x1,x2,...,x8)*u.
How can I do this with matlab? (after this small example I want to apply the method to very big vectors of symbolic variables)

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