lean_workbook_plus_30757

Open

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

Evaluate $(Log_2 9)(log_3 7)(log_7 8)$ .

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_30757 : (Real.logb 2 9) * (Real.logb 3 7) * (Real.logb 7 8) = 6   :=  by sorry

Source