• 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]
  • C

    内容

    • 0

      设曲线L为圆周[img=78x26]18036fe47007bcb.png[/img],则[img=107x48]18036fe477f98cb.png[/img]的值为 A: [img=17x22]18036fe480600ea.png[/img] B: [img=36x22]18036fe4898f0a7.png[/img] C: 1 D: [img=20x14]18036fe4925ab4d.png[/img]

    • 1

      A: [img=107x48]1802fa9cb5fd6ac.bmp[/img] B: [img=94x47]1802fa9cc2aebbc.bmp[/img] C: [img=202x50]1802fa9cd3e9a5f.bmp[/img] D: [img=207x44]1802fa9ce1759bd.bmp[/img]

    • 2

      设 [img=13x19]180392ee5ef1dcc.png[/img] 是[img=28x18]180392ee675dfad.png[/img]平面上一条光滑的闭曲线,所围成的区域为 [img=15x19]180392ee7016574.png[/img],[img=13x19]180392ee5ef1dcc.png[/img]取正向,则 [img=15x19]180392ee80d67f2.png[/img] 的面积是 ( ) A: [img=72x60]180392ee88d69bf.png[/img] B: [img=54x48]180392ee92340f3.png[/img] C: [img=96x48]180392ee9a9b5b7.png[/img] D: [img=107x48]180392eea34b402.png[/img]

    • 3

      数列( )不存在极限. A: [img=156x30]180340c7772b59f.png[/img] B: [img=107x48]180340c77fa1fa2.png[/img] C: [img=92x56]180340c78735333.png[/img] D: [img=171x84]180340c792937f9.png[/img]

    • 4

      设函数[img=113x49]1802cfb8b6fe173.png[/img],则[img=49x25]1802cfb8bff2b68.png[/img]的值为( ). A: -48 B: 48 C: -2 D: 2