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HELP with substitution question on PT 59, Sec 1, #10

Posted: Tue Nov 09, 2010 5:28 pm
by marsilni
How do you attack this problem? Why D instead of C?

Re: HELP with substitution question on PT 59, Sec 1, #10

Posted: Thu Nov 11, 2010 3:26 pm
by marsilni
Up