How do you use the Change of Base Formula and a calculator to evaluate $log_7 648$ ?

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Answer 1 · 2015-11-27T02:27:00

$log648/log7$

$log_ab=logb/loga$

Notice that there is a $log$ button on your calculator.

$log_7 648=log648/log7$

Put this into your calculator as "log(648)/log(7)"—don't forget the parentheses.

How do you use the Change of Base Formula and a calculator to evaluate log_7 648log_7 648?