This text will talk about some new methods about the limit of disjunction function in the boundary and the operation of lead number and definite integral.
分段函数是函数问题中难点，本文就分段函数在分界点的极限，导数、定积分的运算问题探讨一些新方法。
This text will talk about some new methods about the limit of disjunction function in the boundary and the operation of lead number and definite integral.
分段函数是函数问题中难点，本文就分段函数在分界点的极限，导数、定积分的运算问题探讨一些新方法。
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