how to find an infinite sum
If |r| < 1, then the series will converge. If |r| > 1 then the series diverges. (Piece of cake! Time to converge on a few series! Very punny!!) SUM OF AN INFINITE GEOMETRIC SERIES If |r| < 1, the infinite Geometric Series: t1 + t1r + t1r + . . . + t1r + . . . converges to the sum s = t1 / (1 - r). If |r| > 1, and t1 does not = 0, then the series diverges.