diff --git a/out/report_a-2.pdf b/out/report_a-2.pdf
index f8523ca..6ced3ec 100644
Binary files a/out/report_a-2.pdf and b/out/report_a-2.pdf differ
diff --git a/out/report_a-2.synctex.gz b/out/report_a-2.synctex.gz
index 0dff835..ae3b840 100644
Binary files a/out/report_a-2.synctex.gz and b/out/report_a-2.synctex.gz differ
diff --git a/sections/a-2/reflection.tex b/sections/a-2/reflection.tex
index cbac129..21a0890 100644
--- a/sections/a-2/reflection.tex
+++ b/sections/a-2/reflection.tex
@@ -179,7 +179,7 @@
 
 \cref{fig:thevenin-proof-open-circuit}のような回路$N$を考える．
 この回路には複数の電圧源・電流源があり内部インピーダンスは$Z_0$である．
-そして，この回路の開放電圧は$V_0$とする．
+そして，この回路の開放電圧を$V_0$とする．
 
 次に\cref{fig:thevenin-proof-load}のように負荷インピーダンス$Z_L$を接続する．
 この時，回路には電流$I$が流れる．
diff --git a/sections/a-2/theory.tex b/sections/a-2/theory.tex
index de16372..13f75aa 100644
--- a/sections/a-2/theory.tex
+++ b/sections/a-2/theory.tex
@@ -95,10 +95,10 @@
 
 \subsection{テブナンの定理}
 
-電源を含む線形回路の端子開放電圧が$\dot{V_0}$で内部インピーダンスが$\dot{Z_0}$であった場合にインピーダンス$\dot{Z}$を端子に接続したとき，流れる電流$\dot{I}$は\cref{equ:thevenin}となる．
+電源を含む線形回路の端子開放電圧が$V_0$で内部インピーダンスが$Z_0$であった場合にインピーダンス$Z$を端子に接続したとき，流れる電流$I$は\cref{equ:thevenin}となる．
 
 \begin{equation}\label{equ:thevenin}
-    \dot{I} = \frac{\dot{V_0}}{\dot{Z_0} + \dot{Z}}
+    I = \frac{V_0}{Z_0 + Z}
 \end{equation}
 
 \newpage
@@ -109,26 +109,25 @@
         \centering
         \begin{circuitikz}
             \draw (0,0) node[fourport] (X) {$X$};
-            \draw (X.center) node {$\dot{Z_0}$};
+            \draw (X.center) node {$Z_0$};
             \draw (X.port3) to [short, -o] ++(1,0) node[above]{A} coordinate(A);
             \draw (X.port2) to [short, -o] ++(1,0) node[below]{B} coordinate(B);
             \ctikzset{resistors/scale=0.4}
-            \draw (B) to [R={$\dot{Z}$}] (A);
+            \draw (B) to [R={$Z$}] (A);
             \draw[->] ($(B) + (0.25,0.1)$) -- ($(A) + (0.25,-0.1)$);
-            \node at ($($(A)!0.5!(B)$) + (0.5,0)$) {$\dot{V}$};
+            \node at ($($(A)!0.5!(B)$) + (0.5,0)$) {$V$};
         \end{circuitikz}
-        \subcaption{}
-        \label{}
+        \subcaption{Current on Linear Circuit with Load}
+        \label{fig:thevenin-example}
     \end{minipage}
     \begin{minipage}[h]{0.45\linewidth}
         \centering
         \begin{circuitikz}
-            \draw (0,0) to [battery1={$\dot{V_t}$},invert] ++(0,2) to [R={$Z_t$}] ++(0,2);
+            \draw (0,0) to [battery1={$V_t$},invert] ++(0,2) to [R={$Z_t$}] ++(0,2);
             \draw (0,4) to [short, -o] ++(2,0) node[below]{A};
             \draw (0,0) to [short, -o] ++(2,0) node[above]{B};
         \end{circuitikz}
-        \subcaption{}
-        \label{}
+        \subcaption{Thevenin's Equivalent Voltage Source}
     \end{minipage}
     \caption{Thevenin's Theorem}
     \label{fig:thevenin}