/x - 4\ /x - 4\ log|-----| log|-----| \2 - x/ \2 - x/ ---------- - ---------- 5 15 log(6) ----------------------- <= ------ log(x - 2) log(x - 2) 5 ---------- - ---------- 5 5
(-log((x - 4)/(2 - x))/15 + log((x - 4)/(2 - x))/5)/(-log(x - 2)/5 + log(x - 2)/5) <= log(6)/5