let f : ℝ → ℂ := fun t ↦ (1 + I) * t + 2 * (1 - t)
case pos.hxy
w : ℂ
hw : ¬w = 1 ∧ 0 < w.re
w_im : w.im = 0
⊢ JoinedIn {z | z ≠ 1 ∧ 0 < z.re} 2 (1 + I)
case pos.hxy
w : ℂ
hw : ¬w = 1 ∧ 0 < w.re
w_im : w.im = 0
f : ℝ → ℂ := fun t => (1 + I) * ↑t + 2 * (1 - ↑t)
⊢ JoinedIn {z | z ≠ 1 ∧ 0 < z.re} 2 (1 + I)