Today:
-  Announcements
	 
 
-  Last time:
	
	-   we finished with section 
	1.4
	
-  We began Section
	1.5
		
		 
		-  #3 - computing derivatives using the centered difference formula
		
-  Let's compare with the backward difference.
		
-  And let's talk about visualizing these....
		
 
 
-  Today 
	
	 
-  Links:
	
	 
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