updating scheme

psholtz · Feb 23, 2015 · de46263 · de46263
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commit de46263
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diff --git a/Section-3.2/mit-scheme/exercise3-10.md b/Section-3.2/mit-scheme/exercise3-10.md
@@ -21,6 +21,22 @@ Recall from section 1.3.2 that ```let``` is simply syntactic sugar for a procedu
 (let ((<var> <exp>)) <body>)
 ```
 
+is interpreted as an alternate syntax for 
+
+```scheme
+((lambda (<var>) <body>) <exp>)
+```
+
+Use the environment model to analyze this alternate version of ```make-withdraw```, drawing figures like the ones above to illustrate the interactions
+
+```scheme
+(define W1 (make-withdraw 100))
+(W1 50)
+(define W2 (make-withdraw 100))
+```
+
+Show that the two versions of ```make-withdraw``` create objects with the same behavior. How do the environment structures differ for the two versions?
+
 Solution
 --------