• 2022-06-04
    设闭曲线L所围区域的面积为S,则S=( )
    A: [img=107x48]18036fe44af1247.png[/img]
    B: [img=107x48]18036fe453daed2.png[/img]
    C: [img=107x48]18036fe45ca5ff4.png[/img]
    D: [img=107x48]18036fe46553a43.png[/img]