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April 9th, 2012, 07:56 PM  #1 
Newbie Joined: Apr 2012 Posts: 10 Thanks: 0  Simplify the following
Simplify 4sin4xcos4x

April 9th, 2012, 08:35 PM  #2 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,184 Thanks: 481 Math Focus: Calculus/ODEs  Re: Simplify the following
Use the doubleangle identity for sine: to write: 

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