7).  State whether the series converges absolutely, conditionally, or not at all. ∞     n = 1(−1)n + 1 3n n! The series converges absolutely.The series converges conditionally.     The series diverges.   please show step by step

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Chapter2: Second-order Linear Odes
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7). 

State whether the series converges absolutely, conditionally, or not at all.
 
 
n = 1
(−1)n + 1
3n
n!
The series converges absolutely.The series converges conditionally.     The series diverges.

 

please show step by step 

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