November 3rd, 2010, 08:39 AM  #1 
Senior Member Joined: Oct 2009 Posts: 895 Thanks: 1  Questions in derivatives
Hi all my answer a ) = x^2cosx + 2xsinx 2xsinx 2xcosx b) 4sinx/(cosx)^2 + sex2x/(tanx)^2 c) sec2x/(1=tanx)^2  part 2 a ) Qcosx+sinQ+cosQ b)xtan2x^1+7x c) one derivativ = kmq^2+h/2 second derivativ = 2kmq^2 
November 3rd, 2010, 12:14 PM  #2 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,205 Thanks: 512 Math Focus: Calculus/ODEs  Re: Questions in derivatives
Part 1 1. a) b) c) 2. Part 2 1. 2. 3. 
November 3rd, 2010, 10:25 PM  #3 
Senior Member Joined: Oct 2009 Posts: 895 Thanks: 1  Re: Questions in derivatives
Thanks


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