Friday 11 December 2015

LOGARITHMS 8


If Logay = Loga6 +  Loga3 ; find y.

solution

Logay = Loga6 +  Loga3

Logay = Loga(6 x 3)         [since Logam +  Logan = Loga(m x n)] 

Logay = Loga18

Hence y = 18                  [since Loga cancels out]

TRY THIS..............................

NECTA 1997 QN 13a


If Logax = Loga5 +  Loga3 ; find x.

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