Sunday, 24 December 2017

LOGARITHMS 5


If Loga2y = Loga26 +  Loga10 ; find y.

solution

Loga2y = Loga26 +  Loga10

Loga2y = Loga(26x 10)         [since Logam +  Logan = Loga(m x n)] 

Loga2y = Loga260

2y = 260            [since Loga cancels out]

2y = 260           [dividing by 2 both sides]
2       2

Hence y = 130                

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


NECTA 1997 QN 13a



If Logax = Loga5 +  Loga3 ; find x.



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