Your basic data is
a = .5
r = 3
Now just use the formula
sum(n) = a(r^n -1)/(r-1)
sum(10) = .5(3^10 - 1)/(3-1)
= .....
Find the sum of the first 10 terms of the Geometric sequence 0.5, 1.5, 4.5, 13.5…
1 answer
1 answer