高中数学代数与函数一函数练习题29
题目内容

已知 http://picflow.koolearn.com/upload/2012-09/28/c251b828-48db-43b8-882f-ea3c666bca8e/paper.files/image023.png是定义在 http://picflow.koolearn.com/upload/2012-09/28/c251b828-48db-43b8-882f-ea3c666bca8e/paper.files/image054.png上且以3为周期的奇函数,当 http://picflow.koolearn.com/upload/2012-09/28/c251b828-48db-43b8-882f-ea3c666bca8e/paper.files/image055.png时,http://picflow.koolearn.com/upload/2012-09/28/c251b828-48db-43b8-882f-ea3c666bca8e/paper.files/image056.png,则函数 http://picflow.koolearn.com/upload/2012-09/28/c251b828-48db-43b8-882f-ea3c666bca8e/paper.files/image023.png在区间 http://picflow.koolearn.com/upload/2012-09/28/c251b828-48db-43b8-882f-ea3c666bca8e/paper.files/image057.png上的零点个数是(   )                         

2021-07-26

A.3

B.5

C.7

D.9

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