KASH3 Ref - RealRoots

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| ### Function RealRoots ( elt-alg^pol F, rng S, elt-rng e ) -> seq() ### Description Given a polynomial F over Z or Q and a real ring S and a positive real number e, return the real roots of F with each root correct up to +-e. ### Examples RealRoots(X^2-2, RealField(30), 10^(-40));
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