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Mathematics 16 Online
OpenStudy (anonymous):

Simplify the expression.

OpenStudy (amistre64):

what are your log rules for this?

OpenStudy (amistre64):

meaing, you have course materials to memorize and i cant memorize them for you ... you have to apply what youre learning.

OpenStudy (amistre64):

that rule will help

OpenStudy (amistre64):

if a^y = x then log(a^y) = log(x) or y log(a) = log(x)

OpenStudy (amistre64):

what are our a,y, and x parts for this question?

OpenStudy (amistre64):

:) you would be right ...

OpenStudy (amistre64):

\[12^{log_{12}(24)}=x\] \[log(12^{log_{12}(24)})=log(x)\] \[{log_{12}(24)}(log(12))=log(x)\] \[{log_{12}(24)}=log(x)/log(12)\] notice that this is refered to as the change of base form, hence \[log_{12}(24)=log_{12}(x)\] all things being equal ... x=24

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