I DE KltM TRA THU' GIO'A HKll ' , NAM HQC 2020 - 2021 : Stl GD&OT TP f-IA N()t TRU"ONGTHPTTA¥ 86 MON TOAN - Kb61 Thb)di~n tfch cua D ·duc;,c theo :::~ ~ngthuc • A JIJ (x)-g(x~dx b B f{J(x)-g(x))dx II • • • C S = f /(x)