- #1
member38644
my problem is regarding sequences:
Sum first 20 terms of a=r^k-1
terms are 2, 4/3, 8/9,...
and ratio is 2/3
and r < 1 so its an inflated series
and 2(2/3)^19 = .009021859795
BUT it is an inflated series right? and my answer is the sum of the
first 20 terms which has to be larger than 2 right? so where am I
going wrong?
Sum first 20 terms of a=r^k-1
terms are 2, 4/3, 8/9,...
and ratio is 2/3
and r < 1 so its an inflated series
and 2(2/3)^19 = .009021859795
BUT it is an inflated series right? and my answer is the sum of the
first 20 terms which has to be larger than 2 right? so where am I
going wrong?