diff --git a/code/richardson_method.py b/code/richardson_method.py
index 2144fc22..fb5874f3 100644
--- a/code/richardson_method.py
+++ b/code/richardson_method.py
@@ -23,7 +23,10 @@ class RichardsonMethod:
         
     @staticmethod
     def calculate_eigenvalues(LinAlgType, A, type):
-        return EigenvalueMethods.inverse_power_method(LinAlgType, A, type), EigenvalueMethods.power_method(LinAlgType, A, type)
+        eigenvalues = np.linalg.eigvals(A)
+        lambda_min = np.min(eigenvalues)
+        lambda_max = np.max(eigenvalues)
+        return lambda_min, lambda_max
 
     @staticmethod
     def calculate_omega(lambda_min, lambda_max):