Update appendix-e.md

pavly-gerges · web-flow · commit 864657c8cd39 · 2024-05-08T22:47:04.000+01:00
diff --git a/calculus/appendix-e.md b/calculus/appendix-e.md
@@ -59,4 +59,8 @@ $$And, u.v = ||u|| * ||v|| * cos(\theta)$$
 
 ## 2) Projection vectors: 
 
+## 3) Usages Review:
+1-  
+2-
+
 
