Question
use geometric a[1]=40 a[4]=135 find a[3]
Answers
Damon
40 r^3 = 135
r = 1.5
a(1) = 40
a(2) = 60
a(3) = 90
a(4) = 135
r = 1.5
a(1) = 40
a(2) = 60
a(3) = 90
a(4) = 135