lean_workbook_plus_4742
ProvedProve .
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_4742 (a b c : ℝ) : a * b + b * c + c * a ≤ (a + b + c) ^ 2 / 3 := by sorry
Source
Prove .
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_4742 (a b c : ℝ) : a * b + b * c + c * a ≤ (a + b + c) ^ 2 / 3 := by sorry