ако log 2  0.3010 и log 3  0.4771 , стойността на log 5 ( 512 )
"log 5 ( 512 )  log ( 512 ) / log 5  log 2  9 / log ( 10 / 2 )  9 log 2 / ( log 10 - log 2 )  ( 9 x 0.3010 ) / ( 1 - 0.3010)  2.709 / 0.699  2709 / 699  3.876 отговорът е ."
multiply(0.3010, divide(0.3010, 0.4771))