• 2022-06-08
    设f"(x)在x=0处连续,,则()
    A: f(0)是f(x)的极大值
    B: f(0)是f(x)的极小值
    C: (0,f(0))是曲线y=f(x)的拐点
    D: f(0)非f(x)的极值,(0,f(0))也非y=f(x)的拐点