diff --git a/Schenk_Brandenberger_S3_Aufg4.py b/Schenk_Brandenberger_S3_Aufg4.py
index a5afdef..2b038d6 100644
--- a/Schenk_Brandenberger_S3_Aufg4.py
+++ b/Schenk_Brandenberger_S3_Aufg4.py
@@ -14,7 +14,10 @@ def h1(x):
         return
 
 def h1_diff(x):
-    return (100 * x - 100) / math.sqrt(100 * math.pow(x, 2) - 200 * x + 99)
+    try:
+        return (100 * x - 100) / math.sqrt(100 * math.pow(x, 2) - 200 * x + 99)
+    except:
+        return
 
 def h2_diff(x):
     return (100 * x - 100) / math.sqrt((10*x-11)*(10*x-9))
@@ -24,7 +27,10 @@ def h2(x):
 
 
 def kondnumb(x):
-    return (np.abs(h1_diff(x)) * np.abs(x)) / np.abs(h1(x))
+    try:
+        return (np.abs(h1_diff(x)) * np.abs(x)) / np.abs(h1(x))
+    except:
+        return
 
 def kondnumb2(x):
     return (np.abs(h2_diff(x)) * np.abs(x)) / np.abs(h2(x))
@@ -50,7 +56,6 @@ plt.figure()
 
 plt.plot(x, y1, label='h1(x)')
 plt.plot(x, y2, label='h2(x)')
-plt.xlim(1.099, 1.101)
 
 plt.legend()
 plt.show()