高中数学代数与函数一函数练习题25
题目内容

关于 http://picflow.koolearn.com/upload/2009-12/15/cc7bf51b-2c49-4cc2-86f6-3f83d15f6c6c/paper.files/image002.gif的方程 http://picflow.koolearn.com/upload/2009-12/15/cc7bf51b-2c49-4cc2-86f6-3f83d15f6c6c/paper.files/image268.gif有实根的充要条件是(   )

2021-07-24

A.http://picflow.koolearn.com/upload/2009-12/15/cc7bf51b-2c49-4cc2-86f6-3f83d15f6c6c/paper.files/image269.gif

B.http://picflow.koolearn.com/upload/2009-12/15/cc7bf51b-2c49-4cc2-86f6-3f83d15f6c6c/paper.files/image270.gif

C.http://picflow.koolearn.com/upload/2009-12/15/cc7bf51b-2c49-4cc2-86f6-3f83d15f6c6c/paper.files/image271.gif

D.http://picflow.koolearn.com/upload/2009-12/15/cc7bf51b-2c49-4cc2-86f6-3f83d15f6c6c/paper.files/image272.gif

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