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Mathematics 9 Online
OpenStudy (hba):

Log question.

OpenStudy (hba):

\[\log_{8}512= \]

hartnn (hartnn):

512=8^ ?

OpenStudy (hba):

@hartnn What ?

hartnn (hartnn):

8 raised to what is 512 ?

OpenStudy (hba):

8^3

OpenStudy (hba):

What next ?

hartnn (hartnn):

log_8 8^3 use property that log a^b = blog a

OpenStudy (hba):

\[\log _{a}x ^{m}=mlog _{a}x\]

hartnn (hartnn):

yes, apply that, what u get ?

OpenStudy (hba):

\[\log _{8}8^3\]

OpenStudy (hba):

so, \[3\log _{8}8\]

OpenStudy (hba):

@hartnn Yup ?

hartnn (hartnn):

yes, and that simplifies to ?

OpenStudy (hba):

3*1=3 because \[\log_{a}a=1 \]

OpenStudy (hba):

@hartnn Right ?

hartnn (hartnn):

yes :)

OpenStudy (hba):

Thanks :D

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