- #1
Bazzinga
- 45
- 0
I'm confused about the sum of the geometric series:
[tex]\sum ar^{n-1} = \frac{a}{1-r}[/tex] when |r|<1
but if you have a series like:
[tex]\sum (1/4)^{n-1}[/tex]
the sum is:
[tex]\frac{1/4}{1-(1/4)}[/tex]
should't it be [tex]\frac{1}{1-(1/4)}[/tex] because there is no a value?
[tex]\sum ar^{n-1} = \frac{a}{1-r}[/tex] when |r|<1
but if you have a series like:
[tex]\sum (1/4)^{n-1}[/tex]
the sum is:
[tex]\frac{1/4}{1-(1/4)}[/tex]
should't it be [tex]\frac{1}{1-(1/4)}[/tex] because there is no a value?