Attached files has 5 True or False questions. Thx ac

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Attached files has 5 True or False questions. Thx ac

Answered Same DayDec 21, 2021

Answer To: Attached files has 5 True or False questions. Thx ac

Robert answered on Dec 21 2021
128 Votes
We wish to determine whether each of the following statements is true or false.
1. If the sequence
 ka converges, then it has only one limit, i.e., if 1ka L and 2 ,ka L
then 1 2.L L
This is true. First suppose 1ka L . Then for all 0,  there exists a positive number 1N
such that 1ka L   for all 1.k N Next suppose 2ka L . Then for all 0,  there
exists a positive number 2N such that 2ka L   for all 2.k N Now suppose 1ka L
and 2ka L . Let  1 2max , .N N N Then for all ,k N we have 1ka L   and
2ka L   . Thus by the triangle inequality, we have
1 2 1 2
2 .
k kL L L a a...
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