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来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/11/10 16:04:37
已知集合A=B={1,2},从集合A到集合B的函数y=f(x)满足f(f(x))=f(x),则适合条件的函数有( ) A.1个 B.2个 C.3 个 D.4个
解题思路: 考查函数的概念
解题过程:
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最终答案:略
解题过程:
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最终答案:略