diff --git a/is/ub9/is9.pdf b/is/ub9/is9.pdf
index 06362ac..3b30c8e 100644
--- a/is/ub9/is9.pdf
+++ b/is/ub9/is9.pdf
Binary files differ
diff --git a/is/ub9/is9.tex b/is/ub9/is9.tex
index 08c5668..0b76aa0 100644
--- a/is/ub9/is9.tex
+++ b/is/ub9/is9.tex
@@ -87,7 +87,7 @@
     \Aufgabe{Kernels}{50}
         \begin{enumerate}
             \item $k(x_1,x_2)=C= \alpha \cdot k'(x,y)\\
-            k'(x,y)=1 \begin{pmatrix}
+            k'(x,y)=1 \\\begin{pmatrix}
             x &y
             \end{pmatrix} \begin{pmatrix}
             1 &1\\1&1