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The Null Field and the Interior Field Methods For Mixed Types of Boundary Conditions of Laplaces Equ
The particular solutions(PS)and fundamental solutions(FS)in polar coordinates can be found in many textbooks,but wit......
采用初等变换的方法证明了矩阵方程ＡＸＢ＝Ｃ解存在的充要条件，并在解存在时给出了具体的解法。......
