|
C D |
|||||
|
00 |
01 |
11 |
10 |
||
|
A B |
00 |
1 |
1 |
||
|
01 |
1 |
1 |
|||
|
11 |
1 |
1 |
|||
|
10 |
1 |
1 |
A C
A C
A C + A C
= C ( A + A )
= C・1
= C