高中数学代数与函数一函数练习题30
题目内容

已知M是曲线 http://picflow.koolearn.com/upload/papers/20140824/20140824002250629712.png上的任一点,若曲线在M点处的切线的倾斜角均不小于 http://picflow.koolearn.com/upload/papers/20140824/20140824002250644398.png的锐角,则实数a的取值范围是(    )

2021-07-26

A.http://picflow.koolearn.com/upload/papers/20140824/20140824002250722546.png

B.http://picflow.koolearn.com/upload/papers/20140824/20140824002250753530.png

C.http://picflow.koolearn.com/upload/papers/20140824/20140824002250769541.png

D.http://picflow.koolearn.com/upload/papers/20140824/20140824002250800509.png

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