lean_workbook_plus_43590

Proved

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

Let $a,b$ be positive real numbers such that $a^2+b^4=5$ . Prove that $a+b\leq 3 .$

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_43590 (a b : ℝ) (ha : 0 < a) (hb : 0 < b) (hab : a^2 + b^4 = 5) : a + b ≤ 3   :=  by sorry

Source