diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index edcf932..e2c1cef 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -2945,6 +2945,7 @@
 								- ((648d6e99-977a-4311-863d-1febab2c392c))
 								- ((648d6e79-1d02-42c0-bc45-73dca7753118))
 						- Continuous case
+							- $$X + Y$$
 							-
 			- LATER 学积分
 			  :LOGBOOK: