diff --git a/src/downhill_simplex/2d_optimierungsproblem_1.py b/src/downhill_simplex/2d_optimierungsproblem_1.py
index ffe15d4..e2e7f0c 100644
--- a/src/downhill_simplex/2d_optimierungsproblem_1.py
+++ b/src/downhill_simplex/2d_optimierungsproblem_1.py
@@ -4,5 +4,9 @@ def f(x0):
     x1, x2 = x0
     return (x1 ** 2 + x2 - 11) ** 2 + (x1 + x2 ** 2 - 7) ** 2
 
-minimum = optimize.fmin(f, [-100,-100])
+def f_2(x0):
+    x1, x2 = x0
+    return ((x1-1)**2+(x2-2)**2-9)**2+((x1-2)**2+x2**2-4)**2
+
+minimum = optimize.fmin(f_2, [4,1])
 print(minimum)