Question

If (5a), (a-b), b are in G.P prove that
log (1/3 (a + b) = 1/2(Log a + Log b)​

Answer 1

Answer:

a,b,c are in G.P.

b

2

=ac

⇒logb

2

=logac

⇒2logb=loga+logc

∴loga,logbandlogcareinA.P.