... (phng trình logic) da vào các tiên , nh lý,tính cht ca i s Boole.Ví d 2. 12 Ti thiu hoá hàm f(x1,x 2 ) =x1x 2 + x1x 2 + x1x 2 f(x1,x 2 ) =x1x 2 + x1x 2 + x1x 2 = ... x1).x 2 + x1x 2 = x 2 + x1x 2 = x 2 + x1Ví d 2. 13 Ti thiu hoá hàm 3 bin sauf(x1,x 2 ,x3) =x1x 2 x3 + x1x 2 x3+ x1x 2 x3+ x1x 2 x3 + x1x 2 x3Chng 2. i ... có:f(x1,x 2 ) = f(0,0).x1x 2 + f(0,1).x1.x 2 + f(1,0).x1.x 2 + f(1,1).x1.x 2 = 0.x1x 2 + 1.x1.x 2 + 1.x1.x 2 + 1.x1.x 2 =x1.x 2 + x1.x 2 + x1.x 2 Nhn xét:•...