Thie relationship between divided difference and derivative of a function can be generalized for two functions which the knots are distinct or the knots are coincident.
在结点互异或结点重合时，将函数差商与其导数之间的关系式推广为关于两个函数的情形。
By using the generalized function in the linear array synthesis the direction diagram with approximate flat top in wide Angle region and with or without a single side lobe can be obtained.
将广义函数用于线天线阵综合，可得到广角近似平顶的方向图，亦可得到具有单一付瓣和无付瓣的方向图。
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