Fix: Correct dichotimie

ex3.py

@@ -72,11 +72,8 @@ def relaxation(A, b, omega=1.0, epsilon=1e-6, max_iter=100_000):
     # Pré-calculer (D - ωL)^(-1) une seule fois
     inv_D_omega_L = np.linalg.inv(D - omega * L)
 
-    if omega == 1:
-        return gauss_seidel(A, b)
-
     for _ in range(max_iter):
-        x_new = inv_D_omega_L @ ((1 - omega) * D @ x + omega * (U @ x + b))
+        x_new = inv_D_omega_L @ (omega * (b - U @ x) - omega * L @ x + (1 - omega) * D @ x)
         if np.linalg.norm(x_new - x, ord=2) < epsilon:
             return x_new
         x = x_new