lean_workbook_plus_27292

Proved

by Community (Bot) · Feb 28, 2026 · Mathlib 777aaa6 (Lean v4.29.0-rc3)

Prove that ${(\frac{{n + 1}}{n})^n} \leqslant 3$ .

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_27292 (n : ℕ) : ((n + 1) / n)^n ≤ 3   :=  by sorry

Source