• 2022-05-29
    利用留数计算下列各积分:[tex=12.0x2.357]MPWRH1cPl6PkCImelZrrEl8vJI6KVwTSu8sduqMRLPQpOpUn1jtqvVUTK2yOfh+nIGUdAr3aEJX0x/EtqtJBiw==[/tex]分析 利用留数计算复积分,一般先要求出被积函数在积分路径内部的孤立奇点.判定类型,计算出奇点处的留数,然后应用留数定理便可得到所求的积分值
  • 解  被积函数 [tex=6.429x2.357]bV+56ma7x5Y0AQZj5PCTY744MAlm+3nMqqXjcFFJrl54k7EY8m+g2ATFfHg5a/ij[/tex]在[tex=2.429x1.357]8MsijxGzKNqkgvQ1N8Z+mg==[/tex]内有孤立奇点: [tex=2.214x2.357]N4O0eJXPB2gBQRs/hqEaqQ==[/tex][tex=14.571x1.357]d2lhz1/u1LozWn20xdJgSK7eR0AydZhXiKx9hxL/0uEyKTeZ50gACGZDNQK5waKM[/tex]均为一阶极点. 由公式[tex=18.0x4.214]79Wd/JsaQKi3RBB3vwr839OZ0qFXQDkzn+35bqGaXp2ekv1syPOOqW+H81ibBI0WJukXs2Izgoi8tMlt9a2yyoTFL4S+uEiCkIMcm3I8rMkyx4D73OElh3yKUC0N/sMvmz27LMQDjhZkvnBUYc/nbqxLsMV1bDJuR+nXzudUy9yp33MLj0cQxQythfaahXY6kZOfRaHGPPhbyXlnxyWl+A==[/tex]于是由留数定理[tex=19.429x6.5]qeiYnKXLEhyhuGRg8yLtr7UAGJNM5JOGNsCI2WL4/klISJFZ2YJ/JN4lczGaFqkkrKWZFMoZpoMY0gUecbZq26MNXGc2I38ieVoUL+PCgalnVOl1NlOvocn9XCcizQlvk5Qj6qGEfkWpI5QjWEztdQ8Y53XRNCJd5PE3jzlGAJOR4lKusaAV4dUT7ooTgZ2qBsef694/KY0z4Ewnrp8JagOZk0Tu+NM6++DSWv4SEry4/dJE4CnXxEIjMtGTcz2fOKjfR5Zl8MFINkJPr6LN9PdXTRubuyNKp+JPKrt2vWYFoqKDWZYwq9ditK/f5Mj1DO4U8ehg1XTriQYSwTse+A==[/tex]

    举一反三

    内容

    • 0

      利用留数定理计算积分:[tex=6.071x2.786]RI4S8fCpw2HQSHsM4ujcX1gj5IgL60Pe7wnO94tqfeu0RBMzQH2LdwQu4vaqmZ8a[/tex].

    • 1

      利用留数定理计算积分:[tex=7.357x2.786]Rh48MD6bFp/GECAS00QJjOneDR0MoPyz525mrhwwZQcOAerA1F16m3TcXFYc9DDGWvs9HkIuCr4T22jZPQOv1w==[/tex]。

    • 2

      利用留数计算积分[tex=10.214x2.786]IB0X7stnHfc8HSdwNtPlsLIeJ66pcGrW+OKJay+jG3Thua7tFZEg+1ktOrCWvHvsTPzkygT9D715zaAu7U+3nQ==[/tex].

    • 3

      利用留数计算积分[tex=6.857x2.857]DxP+dllryumTdYfUjf+7XEEkY5dgEc8m4ICYtjcTcZ67ytUzflzJLy2nj9y8e0m1[/tex].

    • 4

      利用留数计算下列积分:[tex=6.286x2.786]WcBg8snZXvzK1WmJ88YxF0Zs9WklDTdTQxc1BVwQjdsk20rvFV2y7u7wI5GtIosx[/tex].