/ 1 \ /3 \ log|x + --| log|- + 2| | 2| \x / log(x + 2) \ x / ---------- - ---------- <= ----------- log(5) log(5) log(5)
log(2 + 3/x)/log(5) - log(x + 2)/log(5) <= log(x + 1/(x^2))/log(5)