Thursday, 3 November 2016

LOGARITHMS 3


If Logay = Loga22 +  Loga7 ; find y.

solution

Logay = Loga22 +  Loga7

Logay = Loga(22x 7)         [since Logam +  Logan = Loga(m x n)] 

Logay = Loga154

Hence y = 154                 [since Loga cancels out]

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

NECTA 1997 QN 13a



If Logax = Loga5 +  Loga3 ; find x. 

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