diff --git a/aa174a_aut2425/index.html b/aa174a_aut2425/index.html
index fee9893..ad16f10 100644
--- a/aa174a_aut2425/index.html
+++ b/aa174a_aut2425/index.html
@@ -255,13 +255,13 @@ <h3>Schedule</h3>
               </td>
               <td class="tg-vnl4">
                 <!-- Week 5 Lecture Slides -->
-                <!-- <a href="pdfs/lecture/lecture_9.pdf">Lecture 9</a>
-                <br/><a href="pdfs/lecture/lecture_10.pdf">Lecture 10</a> -->
+                <a href="pdfs/lecture/lecture_9.pdf">Lecture 9</a>
+                <!-- <br/><a href="pdfs/lecture/lecture_10.pdf">Lecture 10</a> -->
               </td>
               <td class="tg-vnl4">
                 <!-- Week 5 Notebook -->
-                <!-- <a href="https://drive.google.com/file/d/1xinye-QJ_7AD6m_yqEh4fpSjJ0aEq2gR/view?usp=share_link">Notebook 9</a>
-                <br/><a href="https://drive.google.com/file/d/1q37CH2iNYEad8CpJo5nXCinuqCkedF8f/view?usp=sharing">Notebook 10</a> -->
+                <a href="https://drive.google.com/file/d/1xinye-QJ_7AD6m_yqEh4fpSjJ0aEq2gR/view?usp=share_link">Notebook 9</a>
+                <!-- <br/><a href="https://drive.google.com/file/d/1q37CH2iNYEad8CpJo5nXCinuqCkedF8f/view?usp=sharing">Notebook 10</a> -->
               </td>
               <td class="tg-vnl4">
                 <!-- Week 5 Sections -->
diff --git a/aa174a_aut2425/pdfs/lecture/lecture_9.pdf b/aa174a_aut2425/pdfs/lecture/lecture_9.pdf
index 0f42520..84c3ffb 100644
Binary files a/aa174a_aut2425/pdfs/lecture/lecture_9.pdf and b/aa174a_aut2425/pdfs/lecture/lecture_9.pdf differ