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constantly receiving an error undefined function or variable z when use solve

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Answers (1)

Fabio Freschi
Fabio Freschi on 4 Jan 2020
Edited: Fabio Freschi on 4 Jan 2020
Polynomials with a degree greater than 4 do not have explicit solutions. You can use vpa
syms x y
f1 = y == x^3
f2 = x^2+y^2==1;
S = solve([f1, f2],x,y);
vpa(S.x)
vpa(S.y)
Or double if you accept a double result
double(S.x)
double(S.y)

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