Last time: Applications of Differentiation
Today:
-  No new worksheet.
 
-  No problems to return (return quiz, section 4.1).
 
-  No quiz opportunity.
 
-  Roll
 
-  No problems to collect.
 
-  Questions on old stuff (e.g. 4.1)?
 
-  The Calculus of Rainbows:
   
 (Source)
Next time: Optimization problems
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