|
| 系數(shù)應(yīng)該是C1=3,C2=-2.25 |
invisible 發(fā)表于 2023-6-7 10:43 懂了,謝謝 |
| 2和-1分別代表X1和X2的指數(shù) |
| 應(yīng)該是用數(shù)學(xué)模型對(duì)X1 X2求導(dǎo)吧 |
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