• 2022-06-30
    自变量x=( )时,抛物线[img=50x26]1803d3554765325.png[/img]与[img=50x26]1803d3554f08963.png[/img]的切线平行
    A: 1
    B: -1
    C: [img=9x43]1803d355579b07c.png[/img]
    D: [img=9x43]1803d3556094a4e.png[/img]