高中数学代数与函数一函数练习题84
题目内容

若曲线y= http://picflow.koolearn.com/upload/2013-11/26/1185367c-e792-453e-8545-b6726630f50a/paper.files/image063.png上存在三点A,B,C,使得 http://picflow.koolearn.com/upload/2013-11/26/1185367c-e792-453e-8545-b6726630f50a/paper.files/image064.png,则称曲线有“中位点”,下列曲线 (1)y=cosx,,(2) http://picflow.koolearn.com/upload/2013-11/26/1185367c-e792-453e-8545-b6726630f50a/paper.files/image065.png,(3) http://picflow.koolearn.com/upload/2013-11/26/1185367c-e792-453e-8545-b6726630f50a/paper.files/image066.png,(4) http://picflow.koolearn.com/upload/2013-11/26/1185367c-e792-453e-8545-b6726630f50a/paper.files/image067.png有“中位点”的是(   )

2021-08-04

A.(2)(4)

B.(1)(3)(4)

C.(1)(2)(4) C.(2)(3)

D.(2)(3)(4)

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