高中数学代数与函数一函数练习题45
题目内容

下列函数是偶函数的是 (     )

2021-07-26

A.http://picflow.koolearn.com/upload/2012-09/15/4286a315-44ee-4075-8bb7-b528976b979b/paper.files/image001.png

B.http://picflow.koolearn.com/upload/2012-09/15/4286a315-44ee-4075-8bb7-b528976b979b/paper.files/image002.png

C.http://picflow.koolearn.com/upload/2012-09/15/4286a315-44ee-4075-8bb7-b528976b979b/paper.files/image003.png

D.http://picflow.koolearn.com/upload/2012-09/15/4286a315-44ee-4075-8bb7-b528976b979b/paper.files/image004.png

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