用真值表 可以看得比較清楚
F(x1,x2,x3)
可以寫成這樣
X1\X2X3
00 01 11 10
+----------+----------+----------+----------+
0 | F(0,0,0) | F(0,0,1) | F(0,1,1) | F(0,1,0) |
+----------+----------+----------+----------+
1 | F(1,0,0) | F(1,0,1) | F(1,1,1) | F(1,1,0) |
+----------+----------+----------+----------+
可以寫成這樣
X1\X2X3
00 01 11 10
+----------+----------+----------+----------+
0 | F(0,0,X3) | F(X1,1,1)| F(0,1,0) |
+----------+----------+----------+----------+
1 | F(1,0,X3) | | F(1,1,0) |
+----------+----------+----------+----------+
可以寫成這樣
X1\X2X3
00 01 11 10
+----------+----------+----------+----------+
0 | F(0,X2,X3) |
+----------+----------+----------+----------+
1 | F(1,X2,X3) |
+----------+----------+----------+----------+
會不會比較清楚呢
書籤