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问题详情

在（-∞，0）上，下列函数中无界的是

A、y=2^x

B、y=arctanx

C、y=1/(x^2+1)

D、y=1/x

时间：2021-09-01 21:03 关键词：青书学堂河北建筑工程学院土木工程高等数学上册(高起本)

答案解析

D

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