Inverse derivative

反导数───Inverse derivative

In this paper, an inverse eigen derivative method (IEDM) for dynamic modification of mechanical structures is formulated for improving the eigen derivative method (EDM).───本文针对机械结构动力修改的特征导数法(EDM)所存在的问题，提出逆特征导数法(IEDM)。

the methods given in this paper can be used to get some simple inverse Z transform. The partial derivative method and deconvolution method are of practical use.───该文的方法适用于求取较为简单的二维逆z变换问题，尤以偏导数法和逆卷积法更具实际意义。

The results of classical cases indicate that the sensitivity derivative gained by approximate method has good accuracy and the inverse design can be completed efficiently with reduced total CPU time.───典型的算例结果表明简化方法计算得到的敏感性导数具较高的精度，能够有效完成反问题设计且减少总的计算耗时。

Inverse derivative of the mapping at the vertices.───返回网格映射的逆雅格比矩阵。