... 01 11 1000 x x 1 x 01 x 0 1 x 11 0 x x 1 10 1 1 x 1 x 1 ,x2x3,x4Voỡng gom 1 Voỡng gom 2f(x 1 ,x2,x3,x4) 00 01 11 1000 x x 1 x 01 x 0 1 x 11 0 x X 1 10 1 1 X 1 ... từc 1 x 1 Cọng từc 2 x2eỡn f(x 1 ,x2) 0 0 1 1 0 1 0 1 0 1 1 1 Vióỳt theo daỷng chờnh từc 1 ta coù: f(x 1 , x2) = 0.x 1 x2 + 1. x 1 .x2 + 1. x 1 .x2 + 1. x 1 .x2 ... f(0 ,1, 0)x 1 x2x3 + f(0 ,1, 1)x 1 x2 x3 + f (1, 0,0) x 1 x2x3 + f (1, 0 ,1) x 1 x2 x3 + f (1, 1,0) x 1 x2x3 + f (1, 1 ,1) x 1 x2 x3 Vỏỷy daỷng chờnh từc thổù nhỏỳt laỡ daỷng tọứng...