Advertisements
Advertisements
Question
Q 6
Sum
Solution
logx an, logx bn and logx cn are in A.P.
⇒ logx bn - logx an = logx cn - log bxn
⇒ logx bn - logx bn = logx an - logx cn
⇒ 2logx bn = logx an + logx cn
⇒ logx (bn)2 = logx an + logx cn
⇒ (b2)n = (ac)n
⇒ b2 = ac
Hence, a, b and c are in G.P.
shaalaa.com
Simple Applications - Geometric Progression
Is there an error in this question or solution?
