... s):f(x1,x2,x 3 ) = (0+x1+x2+x 3 ).(0+x1+x2+ x 3 ).(0+x1+x2+x 3 ).(1+x1+x2+x 3 ).(1+x1+x2+x 3 ).(1+x1+x2+x 3 ).(1+x1+x2+x 3 ).(1+x1+x2+x 3 )Chng 2. ... (x1,x2,x 3 ) = (x1+x 3 ).(x1+x2) = x1.x1 + x1.x2 + x1.x 3 + x2.x 3 = x1 + x1.x2 + x1.x 3 + x2.x 3 = x1(1+ x2 + x 3 ) + x2.x 3 = x1 + x2.x 3 Nhn xét: ... 1x4x 3 x2x1f(x1,x2,x 3 ,x4)x4x 3 x2x1f(x1,x2,x 3 ,x4)Vòng gom 2Vòng gom 1Bài ging N T S 1 Trang 22 =x1x2x 3 + x1x2x 3 + x1x2x 3 + x1x2 (x 3 + x 3 ) =x1x2x 3 + x1x2(x 3 + x 3 ) + x1x2=...