diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index 5f7f209..12b446f 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -13,7 +13,7 @@
             "state": {
               "type": "markdown",
               "state": {
-                "file": "4a1s/RAS/Notas Projeto RAS.md",
+                "file": "4a1s/RAS/PL - Aula 2.md",
                 "mode": "source",
                 "source": false
               }
@@ -85,7 +85,7 @@
             "state": {
               "type": "backlink",
               "state": {
-                "file": "4a1s/RAS/Notas Projeto RAS.md",
+                "file": "4a1s/RAS/PL - Aula 2.md",
                 "collapseAll": false,
                 "extraContext": false,
                 "sortOrder": "alphabetical",
@@ -102,7 +102,7 @@
             "state": {
               "type": "outgoing-link",
               "state": {
-                "file": "4a1s/RAS/Notas Projeto RAS.md",
+                "file": "4a1s/RAS/PL - Aula 2.md",
                 "linksCollapsed": false,
                 "unlinkedCollapsed": true
               }
@@ -125,7 +125,7 @@
             "state": {
               "type": "outline",
               "state": {
-                "file": "4a1s/RAS/Notas Projeto RAS.md"
+                "file": "4a1s/RAS/PL - Aula 2.md"
               }
             }
           }
@@ -150,15 +150,16 @@
   },
   "active": "4d5a457a9ab7159d",
   "lastOpenFiles": [
-    "4a1s/RAS/T - Aula 2.md",
     "4a1s/RAS/PL - Aula 1.md",
+    "4a1s/RAS/PL - Aula 2.md",
+    "4a1s/RAS/T - Aula 1.md",
     "4a1s/RAS/Notas Projeto RAS.md",
+    "4a1s/RAS/T - Aula 2.md",
     "4a1s/DAA/PL - Aula 1.md",
     "4a1s/MFES/MFES - UC Details.md",
     "4a1s/MFES/T - Aula 2.md",
     "4a1s/MFES/PL - Aula 2.md",
     "4a1s/MFES/PL - Aula 1.md",
-    "4a1s/RAS/T - Aula 1.md",
     "4a1s/index.md",
     "My Digital Garden.md",
     "4a1s/Excalidraw/MFES/Ficha1_ex2.excalidraw.md",
@@ -175,7 +176,6 @@
     "4a1s/DAA/T - Aula 2.md",
     "4a1s/DAA/T - Aula 1.md",
     "4a1s/CP/T - Aula 2 - 19 Setembro.md",
-    "4a1s/CP/PL - Aula 2.md",
     "-.32118",
     "4a1s/ASCN/T",
     "4a1s/ASCN/T.32118",
diff --git a/4a1s/RAS/Notas Projeto RAS.md b/4a1s/RAS/Notas Projeto RAS.md
index a9489a2..ccd72b7 100644
--- a/4a1s/RAS/Notas Projeto RAS.md	
+++ b/4a1s/RAS/Notas Projeto RAS.md	
@@ -7,4 +7,7 @@ Constituição do grupo:
 1. a94942
 2. pg50221
 3. pg52670 (me lol)
-4. 
+4. a91775
+5. pg52672 (lucas)
+
+
diff --git a/4a1s/RAS/PL - Aula 2.md b/4a1s/RAS/PL - Aula 2.md
new file mode 100644
index 0000000..b519f5e
--- /dev/null
+++ b/4a1s/RAS/PL - Aula 2.md	
@@ -0,0 +1,19 @@
+27 de Setembro 2023 - #RAS 
+
+>[!help]+ Ex 5.1
+>Imagine that a software engineer, who concluded recently his degree at a given university, is leading a requirements engineering team for a project to improve the software application that permits students to enroll and register in degrees offered by that university. Which of the following requirements elicitation techniques are adequate for capturing the typical and atypical activities involved in the use of the application?
+>
+>1. Observation
+>2. Prototypes
+>3. Interviews
+>4. Surveys
+>
+>>[!hint]- Resolução
+>>The option should be 
+>>
+>>Option 1 - 
+>>Option 2- The software already exists. Why would one create a prototype for an app that already exists?
+>>Option 3 -
+>>Option 4 - Surveys may be biased and thus create a biased 
+
+