Update schedule

index.html

@@ -101,7 +101,7 @@ <h2>教学日程</h2>
             <tr>
                 <td>2024-09-04</td>
                 <td><a href="./slides/01-intro.pdf">Introduction</a>(9.4 update)</td>
-                <td>无</td>
+                <td>习题 2.3(b)(c) 习题 2.4(a)(c)(e)</td>
             </tr>
         </table>