lean_workbook_plus_1500
ProvedProve using Cauchy Schwarz inequality
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_1500 (x y : ℝ) : (1 + 1 / 4) * (x ^ 2 + 4 * y ^ 2) ≥ (x + y) ^ 2 := by sorry
Source
Prove using Cauchy Schwarz inequality
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_1500 (x y : ℝ) : (1 + 1 / 4) * (x ^ 2 + 4 * y ^ 2) ≥ (x + y) ^ 2 := by sorry