'2log 3' presentation slideshows

Properties of Logarithms

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Logarithms

Logarithms. Calculate the value of y for which 2log 3 y -log 3 ( y +4)=2. 2log 3 y -log 3 ( y +4)=2 log 3 y 2 -log 3 ( y +4)=2 log 3 ( y 2 /y +4)=2 y 2 /y +4=3 2 y 2 /y +4=9 y 2 =9( y +4) y 2 -9 y -36=0 ( y -12)( y +3)=0. Use the technique that log(x)-log(y)=log(x/y).

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