(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

evaluate

[tex]\sum[/tex][tex]\frac{1}{e^n}[/tex] from 0 -> infinity

2. Relevant equations

N/A

3. The attempt at a solution

from what i've learn, i can calculate summation i in form

[tex]\sum[/tex]n^{a},a is integer

or

[tex]\sum[/tex] f(n+1)-f(n)

but how to make 1/e^n in any those form?

can give me any clue please

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

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Evaluate summation

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