• 2022-06-08
    设函数f(x)=x^3-x^2-1,则f(1/x)=
    A: 1-x+x^2/x^3(分数线左边的为分子)
    B: 1+x-x^3/x^3(分数线左边的为分子)
    C: 1-x-x^2/x^3(分数线左边的为分子)
    D: 1+x+x^3/x^3(分数线左边的为分子)