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Please answer the question in detail ____________________________________

Please answer the question in detail
____________________________________

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Grade:11

1 Answers

Aditya Gupta
2081 Points
5 years ago
we can write it as 
1+∑(2n+1)/n!, n ranging from 1 to infinity
or 1+∑2/(n-1)!+∑1/n!
but 1+∑1/n! n from 1 to inf is equal to e
so we have
e+2e
= 3e

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