高中数学代数与函数一函数练习题78
题目内容

已知函数 http://picflow.koolearn.com/upload/2013-04/12/f3ed5214-2a3f-4676-b927-8a630bfafadc/paper.files/image066.png   http://picflow.koolearn.com/upload/2013-04/12/f3ed5214-2a3f-4676-b927-8a630bfafadc/paper.files/image067.png,使函数值为5的 http://picflow.koolearn.com/upload/2013-04/12/f3ed5214-2a3f-4676-b927-8a630bfafadc/paper.files/image068.png的值是(   )

2021-08-04

A.-2

B.2或http://picflow.koolearn.com/upload/2013-04/12/f3ed5214-2a3f-4676-b927-8a630bfafadc/paper.files/image069.png

C.2或-2

D.2或-2或http://picflow.koolearn.com/upload/2013-04/12/f3ed5214-2a3f-4676-b927-8a630bfafadc/paper.files/image069.png

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