Sunday, August 30, 2009 1:36 AM,

A student writes:



	Hi, Professor.

	I am *************  in your EE 306 class
	I hope I am not bothering you on sunday.



You are never bothering me if you are struggling with a 306 problem and I am 
able to help.



	I've got a question on number two, the black box one.
	if I get a+b as a result of addition,
	then can I use that output multiple times or only just once?

	Thank you,
	Sincerely,
	<<name withheld to protect the student who needs a+b more than once>>



Suppose I told you you could only use the result a+b from a black box only 
once.  And suppose you needed that result a+b seven times.  Do you see any way 
you could use the result a+b seven times, even though you are not allowed to 
use the result from a black box more than once?

Hint: Please read the statement of the problem on the problem set carefully.

Good luck with EE 306.

Yale Patt