関連ワード:
sum of n terms in gp if r 1 sum of n terms in gp when r 1 sum of n terms in gp when r less than 1 sum of n terms in gp when r greater than 1 sum of n terms of gp if r is greater than 1 sum of n terms of gp if r is less than 1 the sum of first n terms of gp when r 1 is sum of n terms in gp sum of terms in gp sum of n terms in gp formula
