lean_workbook_plus_47613

Proved

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

Prove $2k+2 \leq 2^{k}$ for $k \ge 3$

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_47613 (k : ℕ) (h₁ : 3 ≤ k) : 2 * k + 2 ≤ 2^k   :=  by sorry

Source