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本文从一个例题入手，探讨了关于奇异函数或由奇异函数与其它函数组合的复合函数的微分问题，着重讨论了δ（t）函数的特殊性，推导了δ[（t）]函数与δ（t）函数之间关系的一个公式。
In this paper, we start with an example and discuss the differential problem of singular functions or complex functions combined with other functions by singular functions. The particularity of the δ (t) function is emphatically discussed, and the relationship between δ [(t)] functions and δ t) function of the relationship between a formula.