This paper gives some properties of several special function discontinuity point and the first kind discontinuity point of ordinary real function. and points out their ap-plicaion in actual problems.
本文给出了几类常见函数间断点及一般实函数第一类间断点的某些特性，并指出它们在实际问题中的应用。
This paper gives some properties of several special function discontinuity point and the first kind discontinuity point of ordinary real function. and points out their ap-plicaion in actual problems.
本文给出了几类常见函数间断点及一般实函数第一类间断点的某些特性，并指出它们在实际问题中的应用。
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