... - 2ottEE THI MON: TOAN KIIOI A, BCAUN()I DT]NGDI-1(tei6m)Ydi m= 1 ta cd y = xt -6x' +9x-1.* Tflp xdc dinh: D = Rx Su bidn thiOn. Chidu-bidn thi n: !'=3x2 ... - tog, x)logn,, -;ft; = tutlt TRUONG THPTCHUYfi,NNGUYEN HUE Thi sinh kh6ng duqc s* d4ng tdi li€u. Cdn bQ coi thi kh6ng gidi th{ch gi thentTRIIONG THPTcnuvnNNCUYNN HUEIIrtoNG ... didm A tr€n mat phftng (ArBrCr) rhuocdoong thing B,C,. Tfnh thd tfch khdi ldng tru ABC.ATBTC, vi tinh khoang cdchgifa hai dudngthing AA, vi B,C, theo a.Cffu V: (1,0 ifiAm)X6t...