设f(x)=3x^4-x^3+x^2,则x→0时,有 ( ) .

设f(x)=3x^4-x^3+x^2,则x→0时,有 ( ) .(A)f(x)与5x^2是等价无穷小. (B)f(x)与5x^2是同阶但非等价无穷小.(C)

查看答案