来自刘立云的问题
设f(x)=x^2+ax｛x|f（x）=0,x∈R}=｛x|f（x）=f(f(x))=0,x∈R}不等于空集,求实数a的取值范围设f(x)=x^2+ax若集合｛x|f（x）=0,x∈R}=｛x|f（x）=f(f(x))=0,x∈R}不等于空集，求实数a的取值范围
设f(x)=x^2+ax｛x|f（x）=0,x∈R}=｛x|f（x）=f(f(x))=0,x∈R}不等于空集,求实数a的取值范围
设f(x)=x^2+ax若集合｛x|f（x）=0,x∈R}=｛x|f（x）=f(f(x))=0,x∈R}不等于空集，求实数a的取值范围
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2020-11-01 20:13