proposition: Lemma expRX x n : exp x ^+ n = exp (x *+ n).
proof: Proof. elim: n => [|n Ihn]; first by rewrite expr0 mulr0n exp_0. by rewrite exprS Ihn mulrS expRD. Qed.
imports: Rdefinitions Raxioms RIneq Rbasic_fun Zwf Epsilon FunctionalExtensionality Ranalysis1 Rsqrt_def Rtrigo1 Reals mathcomp(all_ssreflect ssralg poly mxpoly ssrnum) HB(structures) mathcomp(boolp classical_sets) reals