x
y
xy
x+y
0
0
0
0
1
0
1
0
1
1
1
0
0
1
0
1
1
1
1
0
| x | y | xy | x+y |
|
| 0 | 0 | 0 | 0 | 1 |
| 0 | 1 | 0 | 1 | 1 |
| 1 | 0 | 0 | 1 | 0 |
| 1 | 1 | 1 | 1 | 0 |