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

so I have learned how to do different problems of series.

but theres this problem that I spent hours last night but could not come up with anything.

which is-

∞

∑ n/2^(n-1)

n=1

2. Relevant equations

I have no idea

3. The attempt at a solution

so from there i was able to take out 2 and end up with: 2 n /(2^n)

i dont know how to do after that. however, i thought about doing (1/2)^n but then again it does not make sense to me.

help needed. i will appreciate that. thanks

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

2. Relevant equations

3. The attempt at a solution

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# Infinite series n/2^n-1

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