How do you find #S_n# for the geometric series #a_1=4#, r=0.5, n=8?
2 Answers
Dec 6, 2016
Explanation:
there are two equations to find
if r is greater than 1, we use
and if r is less than 1, we use
in this question r is less than 1. so we use the second equation to find
therefore
Dec 6, 2016
Explanation:
Given an initial value
the
Using the given values (and a calculator)