摘要: 1 Scalar Function \(\text{If }f(\mathbf{x})\in\mathbf{R},\mathrm{then}\) \[df=\frac{\partial f}{\partial x}dx+\frac{\partial f}{\partial y}dy+\frac{\p 阅读全文
posted @ 2024-01-09 20:40 Dba_sys 阅读(16) 评论(0) 推荐(0) 编辑