2025年教学资料:第3章 函数(单元测试)(原卷版)
第3章函数单元测试一、单项选择题(在每小题给出的四个选项中,只有一项是符合题目要求的)1.已知f(x)=2x+1,则f(5)=( )A.3 B.7C.11D.252.函数f(x)=x+的定义域是( )A.[2,+∞) B.(2,+∞)C.(-∞,2]D.(-∞,2)3.下列各组函数中,表示同一函数的是( )A.y=x与y= B.y=x2与y=C.y=1与y=(x+1)0D.y=|x|与y=()24.已知一次函数的图象过点(1,0)和(0,1),则该一次函数的解析式为( )A.f(x)=-x B.f(x)=x-1C.f(x)=x+1D.f(x)=-x+1...
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