How do you evaluate $log_7 4$ using the change of base formula?

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Answer 1 · 2017-05-20T21:19:49

$~~0.7124" to 4 dec. places"$

$"Given " log_b a" then change of base is as follows"$

$• (log_(10)a)/(log_(10)b)$

$rArrlog_7 4=(log_(10)4)/(log_(10)7)~~0.7124$

How do you evaluate log_7 4log_7 4 using the change of base formula?