Add overlay specifications in the tikzpicture.

Beamer/Lösen spezieller Differenzialgleichungen.tex

@@ -38,14 +38,6 @@
 	\end{textblock*}
 }
 
- \tikzset{
-	invisible/.style={opacity=0,text opacity=0},
-	visible on/.style={alt={#1{}{invisible}}},
-	alt/.code args={<#1>#2#3}{%
-		\alt<#1>{\pgfkeysalso{#2}}{\pgfkeysalso{#3}}
-	},
-}
-
 \begin{document}
 	
 	\begin{frame}[plain]
@@ -78,16 +70,16 @@
 	
 		\begin{figure}
 			\centering
-			\begin{tikzpicture}[visible on=<2->]
+			\begin{tikzpicture}
 			\draw[very thin,color=gray] (0.0,0.0) grid (0,0);
 			\draw[->] (-0.5,0) -- (7.0,0) node[right] {$t$};
 			\draw[->] (0,-2.0) -- (0,3.0) node[above] {$x$};
-			\draw[green,domain=0.01:4] plot (\x,{\x*ln(\x)-\x-1});
-			\draw (5.83,1) node[green,left] {$\alpha = -1$};
-			\draw[blue,domain=0.01:4] plot (\x,{\x*ln(\x)-\x});
-			\draw (5.5,2) node[blue,left] {$\alpha = 0$};
-			\draw[red,domain=0.01:4] plot (\x,{\x*ln(\x)-\x + 1});
-			\draw (5.5,3) node[red,left] {$\alpha = 1$};
+			\onslide<4->{\draw[green,domain=0.01:4] plot (\x,{\x*ln(\x)-\x-1});
+			\draw (5.83,1) node[green,left] {$\alpha = -1$};}
+			\onslide<2->{\draw[blue,domain=0.01:4] plot (\x,{\x*ln(\x)-\x});
+			\draw (5.5,2) node[blue,left] {$\alpha = 0$};}
+			\onslide<3->{\draw[red,domain=0.01:4] plot (\x,{\x*ln(\x)-\x + 1});
+			\draw (5.5,3) node[red,left] {$\alpha = 1$};}
 			\end{tikzpicture}
 		\end{figure}
 	\end{frame}