Ngày tải lên :
08/11/2015, 03:03
... ; x = y=6 Kt lun 0 ,50 0, 25 0, 25 0, 25 0 ,50 0, 25 0, 25 0, 25 0, 25 0, 25 0, 25 0 ,50 0, 25 0 ,50 0, 25 0, 25 Bi (3 ,50 im) 30 0, 25 a) (1,00 im) CNM v DNA cú NCM = NDA = 900v MNC = AND() Kt lun b) (1,00 ... 0 ,50 0, 25 4x y = PT x x 0 ,50 0, 25 Khi x = thỡ P = Cõu b 0, 75 IM 0, 25 0, 25 0 ,50 0, 25 0, 25 0 ,50 Bi Cõu a 1, 75 3,0 A E B O C P F s DCE = D 1 s DE, s DPE = s (DE - CF), s CAF = s CF 2 0 ,50 ... Bi (0 ,50 im) Kt lun x x v x ( x 1)( x 2) x 3x Tng t y 3y v z 3z x2 + y2 + z2 3( x + y +z) = 0 ,50 0 ,50 0, 25 0, 25 0, 25 0, 25 0, 25 0, 25 0, 25 0, 25 0, 25 0, 25 0, 25 0, 25 31 S...