Thursday 21 October 2021

LOGARITHMS C1

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If Logax = -20, find Loga(1/x6)

 

Solution

 

= Loga(1/x6)                        

 

= Logax-6                   [since 1/cn =c-n]

 

= -6 x Logax       [since Logmxn   = nLogmx]               

 

= -6 x -20

 

= 120

 

TRY THIS………..

 

If LogaW= -30, find Loga(1/W5)

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