diff --git a/.gitignore b/.gitignore
index 524af5b..64ea404 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,6 +5,4 @@
 .obsidian/graph.json
 
 .trash/
-.DS_Store
-
-*.pdf
\ No newline at end of file
+.DS_Store
\ No newline at end of file
diff --git a/College/AU 26/MATH 208 (Matrix Algebra)/Chapter 2.2 - Span.md b/College/AU 26/MATH 208 (Matrix Algebra)/Chapter 2.2 - Span.md
index cd55b58..8735cc0 100644
--- a/College/AU 26/MATH 208 (Matrix Algebra)/Chapter 2.2 - Span.md	
+++ b/College/AU 26/MATH 208 (Matrix Algebra)/Chapter 2.2 - Span.md	
@@ -49,5 +49,3 @@ $$A\mathbf{x}=\mathbf{b} \quad \sim \quad x_{1}\mathbf{a}_{1} + x_{2}\mathbf{a}_
 > 	10x_{1} + 8x_{2} = 18 \\ 5x_{1} + 6x_{2} = 31 \\ 7x_{1} - x_{2} = 3
 > \end{gather}$$
 
-testing23
-hi
\ No newline at end of file
diff --git a/College/AU 26/MATH 224 (Multivar)/Stewart J., Clegg D., Watson S. Calculus. Early Transcendentals 9ed 2020.pdf b/College/AU 26/MATH 224 (Multivar)/Stewart J., Clegg D., Watson S. Calculus. Early Transcendentals 9ed 2020.pdf
new file mode 100644
index 0000000..b53c9c2
Binary files /dev/null and b/College/AU 26/MATH 224 (Multivar)/Stewart J., Clegg D., Watson S. Calculus. Early Transcendentals 9ed 2020.pdf differ