How to calculate log40 value,if log2 & log5 value given.... As the question given ln practice manual .... I mean the logic behind the 3*log2+log5....plz help me..
pranab kumar das (ca) (44 Points)
21 March 2016How to calculate log40 value,if log2 & log5 value given.... As the question given ln practice manual .... I mean the logic behind the 3*log2+log5....plz help me..
Madhavi
(CA - FINAL)
(1342 Points)
Replied 21 March 2016
find the multiples of 40 i.e 40 can be written as 5X8.
Then 8 can be written as 23 i.e 2 cube(2X2X2)
as per logarthms formulae
log abc can be written as Loga + Log b+ Log c
and Logab = b log a
in this formulae if you substitute
log 40 = log 8 + log 5
= log 23 (2 cube) + log 5
= 3 log 2 + log 5
Giving values of log 2 and log 5 we will get answer
CAclubindia
