Monday, 23 March 2015

LOGARITHM 5


If Logax = 1/2  Loga144+ 1/3 Loga27 find x.

Solution

Logax = 1/2  Loga144+ 1/3 Loga27

Logax = Loga1441/2  +  Loga271/3   [Square root of 144 is 12, Cube root of 125 is 5]

Logax = Loga 12 +  Loga3

Logax = Loga (12 x 3)               [Since Loga m +  Logan = Loga mn]

Logax = Loga 36

x = 36

TRY THIS………………



If Logax = 1/3  Loga216+ 1/4 Loga16; find x.

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