Logarytmy ! Pomocy blagaaam 13-7log 7z8 2(log5z1/25 - log8z1) 2 log 3 + log 2 + 1 log 3z18- log 3z9 4log4z6/ log 4z2+ log4z8 log16z11 - log 11z4

[latex]13-7log_{7}8 approx 13 - 7,48=5,52 hbox{Tu nawet nic sie nie uprosci...} \ 2(log_{5} frac{1}{25}-log_{8}1)=2(log_{5}5^{-2}-log_{8}8^{0})=2 cdot (-2-0)=\= 2 cdot (-2)=-4 \ 2log 3+log 2+1= log 9 +log 2 +log 10=log 180 approx 2,225 \ log_{3}18-log_{3}9=log_{3}2 approx 0,631 \ [/latex] [latex]frac{4log_{4}6}{log_{4}2 +log_{4}8} =frac{4log_{4}6}{frac{1}{2}+frac{3}{2}}=frac{4log_{4}6}{2}=2log_{4}6=log_{4}36 approx 2,585 \ log_{16}11-log_{11}4=frac{1}{log_{11}16}-log_{11}4approx 0,865+0,578=1,443[/latex]