Table 4:
Dynamic truth table for Figure 13.
| x 1 | x 2 | f1 = x2 | f2 = x1 |
|---|---|---|---|
| 0 | 0 | 0 | 0 |
| 0 | 1 | 1 | 0 |
| 1 | 0 | 0 | 1 |
| 1 | 1 | 1 | 1 |
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