... 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 + x1).x 2 + x1x 2 = x 2 + x1x 2 = x 2 + x1Ví d 2. 13 ... có:f(x1, x 2 ) =x1.x 2 + x1.x 2 + x1.x 2 = x1.x 2 + x1(x 2 + x 2 )=x1.x 2 + x1= x1 + x 2 - Theo dng chính tc 2 ta có:f(x1, x 2 ) = (0+x1+x 2 ) = x1 + x 2 T biu ... = 0 Bài ging N T S 1 Trang 22 =x1x 2 x3 + x1x 2 x3 + x1x 2 x3 + x1x 2 (x3 + x3) =x1x 2 x3 + x1x 2 (x3 + x3) + x1x 2 = x1x 2 x3 + x1(x 2 + x 2 )=...