Question 842219
log (base 2) 35 - log (base 4) 13


Evaluate {{{log(2,35)-log(4,13)}}}.


Use change of base formula.  Choose a base for which you can either find tables of logarithms or for which a handheld calculator will be able to use.


Common Log will be used here.
{{{log(10,35)/log(10,2)-(log(10,13)/log(10,4))}}}
{{{1.544068/0.30103-1.113943/0.60206}}}
{{{5.12928-1.850219}}}
{{{3.279}}} or very very near it.