proposition: Lemma expRM x y : expR (x * y) = (expR x) `^ y.
proof: Proof. by rewrite /powR gt_eqF ?expR_gt0// expRK mulrC. Qed.
imports: mathcomp(all_ssreflect ssralg ssrint ssrnum matrix) mathcomp(interval rat) mathcomp(boolp classical_sets functions) mathcomp(mathcomp_extra) reals ereal signed topology normedtype landau sequences derive realfun itv convex