added review09 to chapter13

trapperdot00 · trapperdot00 · commit 799a0c70cedd · 2025-05-11T06:05:51.000+02:00
diff --git a/Chapter13/README.md b/Chapter13/README.md
@@ -92,3 +92,6 @@ How do you add functions together?
  
 ## [Review 8](review/08.txt)
 How do you color and label a graphed function?
+
+## [Review 9](review/09.txt)
+What do we mean when we say that a series approximates a function?
diff --git a/Chapter13/review/09.txt b/Chapter13/review/09.txt
@@ -0,0 +1,2 @@
+A series approximates a function if the more terms we calculate,
+the more mathematically correct our function will be.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+A series approximates a function if the more terms we calculate,`
	`2`	`+the more mathematically correct our function will be.`