PDEs
- 三类PDE:
- 椭圆型
- 双曲型
- 抛物型
- 两个公式
-
Green
$$ \iint_D \left( \frac{\partial Q}{\partial x} - \frac{\partial P}{\partial y} \right) dxdy = \int_{\partial D}Pdx+Qdy $$ - Gauss
-
$$ \iiint_V \left( \frac{\partial P}{\partial x} + \frac{\partial Q}{\partial y} + \frac{\partial R}{\partial z} \right) dxdydz $$
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