... 0,25F*-3A3*g3#$%#$% < −a)%−h0,25 ⇔)% < a)% < < −⇔a⇔ < < a0,25CâuII./0"#$%& ;1 2'***−=+−xxxπ 1 iểmf#$%& ... ∈= +¢0,250,250,250,25 !"#$%& ;1 2/3*+%,*'mmxxxx ++−=−+−YiZ 1 1điểmYiZ ( x xx x x mx m− + − ≥⇔− ... ⇔)% < a)% < < −⇔a⇔ < < a0,25CâuII./0"#$%& ;1 2'***−=+−xxxπ 1 iểmf#$%& #$%#$%D * * * x x xπ ⇔ + − + = −...