引言利用位场解析延拓方法解释重磁异常,不同作者采用不同的数学方法,导出了各种不同形式的简易公式.表面看来,这些公式之间似乎毫无联系,以致无从比较优劣,而只能依靠纯实验的办法来检验.但目前常用的几个解析延拓的近似公式,几乎都是解析函数插补多项式的特殊情形,所以本文试图以二维问题为例,利用复变解析函数的多项式插补理 INTRODUCTION The field-based analytical continuation method is used to explain gravity and magnetic anomalies. Different authors adopt different mathematical methods to derive a variety of simple formulas. On the surface, it seems that there is no connection between these formulas, But can only be tested by the pure experiment method.But almost all the approximate formulas for the analytical continuation are almost special cases of the analytic function interpolation polynomial. Therefore, this paper attempts to take the two-dimensional problem as an example, Polynomial interpolation of functions