Real Analysis Real Analysis Math Forum

 December 5th, 2016, 03:57 PM #1 Newbie   Joined: Dec 2016 From: World Posts: 1 Thanks: 0 Upper and lower bound of A1 and A2 ( please help me out) Find upper bound and lower bound of : A1=2(-1)^n+1 + [(-1)^(n(n+1)/2) * (2+3/n)]. n∈N∗ , A2=(n+1)/(n+2) * cos(n*2pi/3). n∈N∗ ,
 December 5th, 2016, 07:00 PM #2 Global Moderator   Joined: Dec 2006 Posts: 19,168 Thanks: 1640 For A2, consider (n + 1)/(n + 2) and cos(n*2pi/3) separately. What progress can you make by doing that?
 December 19th, 2016, 04:35 PM #3 Math Team   Joined: Jan 2015 From: Alabama Posts: 3,240 Thanks: 884 In A1, is that ((-1)^n)+ 1 or did you intend (-1)^(n+1)? Also are you only asking for "upper bounds" and "lower bounds" or "least upper bounds" and "greatest lower bounds"?

 Tags bound, lower, upper

 Thread Tools Display Modes Linear Mode

 Similar Threads Thread Thread Starter Forum Replies Last Post masters Algebra 4 December 23rd, 2015 05:49 AM zaff9 Abstract Algebra 23 May 11th, 2013 03:57 PM Anton29 Real Analysis 1 June 13th, 2012 08:35 PM jwqwerty Real Analysis 0 March 13th, 2012 04:20 AM Anton29 Calculus 0 December 31st, 1969 04:00 PM

 Contact - Home - Forums - Cryptocurrency Forum - Top