lean_workbook_plus_44887
ProvedGiven the points A(0,-5), B(1,7), C(-3/2,-23), and D(-3,-41) on the curve , find the arithmetic mean of the x-coordinates of these points.
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_44887 (A B C D : ℝ × ℝ) (hA : A = (0,-5)) (hB : B = (1,7)) (hC : C = (-3/2,-23)) (hD : D = (-3,-41)) (h : ∀ p : ℝ × ℝ, p ∈ ({A, B, C, D} : Finset (ℝ × ℝ))) : (A.1 + B.1 + C.1 + D.1) / 4 = -7/8 := by sorrySource