Question

In a geometric sequence, a^4=7 & a^6=28
Use the geometric mean to find the value of a^5..

Answer 1

if G be the g.m between a and b ,then
\[G=\sqrt{a*b}\]

Answer 2

if a,b,c are in G.P ,then b is g,m between a and b

Answer 3

correction b is g,m between a and c