高中数学代数与函数一函数练习题76
题目内容

定义:区间 http://picflow.koolearn.com/upload/2012-12/17/02e934cd-0013-41fa-a526-8352f62d616d/paper.files/image001.png的长度为 http://picflow.koolearn.com/upload/2012-12/17/02e934cd-0013-41fa-a526-8352f62d616d/paper.files/image002.png.已知函数 http://picflow.koolearn.com/upload/2012-12/17/02e934cd-0013-41fa-a526-8352f62d616d/paper.files/image003.png的定义域为 http://picflow.koolearn.com/upload/2012-12/17/02e934cd-0013-41fa-a526-8352f62d616d/paper.files/image004.png,值域为 http://picflow.koolearn.com/upload/2012-12/17/02e934cd-0013-41fa-a526-8352f62d616d/paper.files/image005.png,记区间 http://picflow.koolearn.com/upload/2012-12/17/02e934cd-0013-41fa-a526-8352f62d616d/paper.files/image004.png的最大长度为m, 最小长度为n.则函数 http://picflow.koolearn.com/upload/2012-12/17/02e934cd-0013-41fa-a526-8352f62d616d/paper.files/image006.png的零点个数是(   )

2021-08-03

A.1

B.2

C.4

D.3

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