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Table 8.
Lax equation: 
relative error and time cost of PINN (tanh) and PINN(sine).
| Solution | Method | ||
|---|---|---|---|
| PINN(tanh) | PINN(sine) | ERR | |
| u(x, t) |  |
 |
66.56% |
| Tme cost | 2521 s | 3961 s | – |