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1. The problem statement, all variables and given/known data

Show that the sequence Cn = [(-1)^n * 1/n!]

2. Relevant equations

3. The attempt at a solution

This is an example in my book but I am not understanding it....

It says to find 2 convergent sequences that can be related to the given sequence. 2 possibilities are An = -1/2^n and Bn = 1/2^n

.....................

where are they getting this from??

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# Homework Help: Sequences HELP

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