Question: For the sequence {an} defined in Example 2.3: a. What are the terms a20va90a9 ? b. Find the second index n for which an=1/4 and

For the sequence {an} defined in Example 2.3: a. What are the terms a20va90a9 ? b. Find the second index n for which an=1/4 and the fourth index n for which an=1. c. For j an odd natural namber, set n=2j(j+1)+2j+1 and show that a4=1/2. d. Show that (an) does not coeverge. {an}={11,21,22,31,32,33,41,42,43,44, and an=j+1k m=j2+k(j+1)1kj+1
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