How do you calculate $log_4 78$ with a calculator?

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Answer 1 · 2016-08-06T21:28:39

$x = 3.1427$

Some calculators can calculate logs with bases other than base 10.
But for all calculators, follow this method:

$log_4 78 = x$

Write in index from:

$4^x = 78" the variable is in the index - use logs"$

$xlog_10 4 = log_10 78$

$x = (log_10 78)/(log_10 4)$

$x = 3.1427$

This can also be obtained directly using "The change of base rule"

How do you calculate log_4 78log_4 78 with a calculator?