sumofgeometricseries
Sum of Geometric Series
Suppose S=SUM(1 to n) ab**n
S=a(b**(n+1)-b)/(b-1)
Proof:
bS=SUM(1 to n) ab**(n+1)
bS-S=a(b**(n+1)-b)
Sum of Geometric Series
Suppose S=SUM(1 to n) ab**n
S=a(b**(n+1)-b)/(b-1)
Proof:
bS=SUM(1 to n) ab**(n+1)
bS-S=a(b**(n+1)-b)