• 2022-06-19
    设函数[img=39x20]18034b1025f5fa2.jpg[/img],则曲线的拐点
    A: [img=34x14]18034b102de265a.jpg[/img]
    B: [img=32x19]18034b10361e70e.jpg[/img]
    C: [img=33x17]18034b103dfc589.jpg[/img]
    D: [img=32x19]18034b1045a4422.jpg[/img]