## osanseviero Group Title I need to write the series and say which is it's tendency one year ago one year ago

1. osanseviero

$\sum_{n=1}^{infinite}\frac{ 1 }{ 2^{n} }$

2. osanseviero

So... 1/2 + 1/4 + 1/8 + 1/16+...

3. osanseviero

Is this correct? r=0.5 a= 1 $Sn=\frac{ a }{ 1-r }$ so Sn=1/0.5=2