proposition: Lemma Rpol_integrable p (x1 x2 : R) : ex_RInt (PolR.horner tt p) x1 x2.
proof: Proof. apply: ex_RInt_continuous => x _. exact: Rpol_continuous. Qed.
imports: Coq(ZArith Psatz Reals) Flocq(Raux) Coquelicot(Coquelicot) mathcomp.ssreflect(ssreflect ssrfun ssrbool eqtype ssrnat seq fintype bigop) Stdlib MathComp Coquelicot Xreal Interval Basic Xreal_derive Interval_compl Datatypes Taylor_poly Basic_rec Bound