Quote:
Originally posted by klaucke
The second line is simply what a geometric series from 0->infinity is equal to, w/ |x|<1. |x|<1 is important b/c then the series converges [b/c as n goes to infinity, x goes to zero], if |x|>= 1 then the series diverges to infinity. In our case x does not = .9, x=1/10; .9 is a constant we can put outside the sum.
|
got it, thanks!
__________________
big blue tricycle
stare down the darkness and watch it fade
|