lean_workbook_plus_47039
ProvedPreamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_47039 (a b c : ℝ) : (a * b + a * c + b * c) / (a ^ 2 + b ^ 2 + c ^ 2) ≤ 1 := by sorry
Source
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_47039 (a b c : ℝ) : (a * b + a * c + b * c) / (a ^ 2 + b ^ 2 + c ^ 2) ≤ 1 := by sorry