Answers

2016-07-28T22:59:21+08:00
Use the formula for geometric mean
make 3/4 your first term then 3 as your last term (an)
and n=3

an / a1 = r ⁿ-1
[3 / ( 3/4 )] = r^2
[ 12/3 ] = r^2
[ 4 ] = r^2
r = 2

then you may now divide 3/4 by 2 to get the first term
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