diff --git a/College/AU 26/MATH 224 (Multivar)/Class 10-2.md b/College/AU 26/MATH 224 (Multivar)/Class 10-2.md
index 184185e..79487bb 100644
--- a/College/AU 26/MATH 224 (Multivar)/Class 10-2.md	
+++ b/College/AU 26/MATH 224 (Multivar)/Class 10-2.md	
@@ -13,4 +13,6 @@
 		- x values are between $a$ and $b$ , y values are between $c$ and $d$
 	- slice up solid into equations that can be integrated with one variable
 	- $$\int \int_{[a,b] \times [c,d]} f(x,y) dA = \int^b_{a} \int^d_{c}f(x,y)dy dx$$
-	- 
\ No newline at end of file
+	- Fubini's theorem
+		- $$\int_{a}^b \int_{c}^d f(x,y) dy dx = \int_{c}^d \int_{a}^b f(x,y) dx dy$$
+		- can integrate either way (x or y first)
\ No newline at end of file