bất đẳng thức cho học sinh chuyên

%1] a"hP

#HHhiHUACIHHO JHHQ JHAUHAVAHA J HHHHhILACHCIAHOIJHHQJHHa HHH) Hj#

tHHth5#Ú##hš#Ú£C J##EHDÿ0##Q##U#a J#09%1ˆJ]M"hP

tHHth5#ÚĐCJ1:80 J0Q)14”U##Vtttta JttttPth?RÚtC J#0O J0Q 1a 3JHHHL] HHHHth?£ÚtCJ#80)08Q)#00U0 tra J#tthauU | #thau | #CJ##O J#0QJ#tta J#ttt