lean_workbook_plus_46977
OpenLet
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_46977 (x : ℝ) (t : ℝ) (ht : t = sin x + cos x) : sin x * cos x = (t^2 - 1) / 2 ∧ |t| ≤ Real.sqrt 2 := by sorry
Source
Let
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_46977 (x : ℝ) (t : ℝ) (ht : t = sin x + cos x) : sin x * cos x = (t^2 - 1) / 2 ∧ |t| ≤ Real.sqrt 2 := by sorry