proposition: Lemma nth_derive_PI : forall (n : nat) (f : R -> R) (pr1 pr2 : D n f), nth_derive f pr1 == nth_derive f pr2.
proof: Proof. intros ; apply nth_derive_ext ; reflexivity. Qed.
imports: Reals Rfunction_classes Ranalysis_def Ranalysis_def_simpl Rfunction_def Rextensionality Ranalysis_continuity Ranalysis_derivability Ranalysis_monotonicity Rinterval Nth_derivative_def