def
definition
def or abbrev
arithmeticMean
show as:
view Lean formalization →
formal statement (Lean)
157noncomputable def arithmeticMean (n₁ n₂ : ℝ) : ℝ := (n₁ + n₂) / 2
proof body
Definition body.
158
159/-- **F1.4.3**: For distinct positive reals, the geometric mean differs
160 from the arithmetic mean (AM-GM strict inequality). -/