... S GIO DC V O TO K thi chn HSG gii Toỏn, Lý, Hoỏ, Sinh trờn MTCT LONG AN Mụn Toỏn khi 12, nm hc 2011-2 012 CHNH THC HNG DN CHMBi Túm tt hng gii Kt qu im1Phng ... 0,61803)(3,23606;1,61803)1,05(S dng mỏy tớnh Casio FX 570ES)Khai bỏo: A = A 1: B = 20 12 A B+ +CALC: 2 0122 013 A, 0 B Nhn = cho n khi A = 2 0122 000 thỡ dng, c kt qu B232,05467 1,06P(1) = 0 =2.(11)2, P(2) ... 4.62 =mXT ú suy ra cỏc nghim =x log X6b) (1) cú nghim (2) cú nghim X > 0Lp bng bin thi n suy ra: 2496 3,5704269164 mma) 122,170661,17091 xxb) m = 30,50,54y =...