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函数中自变量x的取值范围是
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x≥-1
x≠3
x≥-1且x≠3
D.x<-1
函数中,自变量x的取值范围是
函数y=中自变量x的取值范围是
A.x≤且x≠0
B.x>-且x≠0
C.x≠0
D.x<且x≠0