• 2022-05-29
    计算下列积分(利用留数: 圆周均取正向):[tex=5.286x3.714]kXQg2VmGwJ9any51M6jLljLuTUyTnvbNOHsxT3HQMgWHU+3B6SpC0xAJ+YPJzjPXHja2TZvmEzNcLt5AsxaEeU2A+P0lu79HwTBkfljPJes=[/tex].
  • 由 [tex=5.143x2.429]W32sAnBVTFCb/DNAPllLWHswL0jX21eDUrVog03uzPyKS0pMhr58LQkDW9OqjGCn[/tex], [tex=1.786x1.0]cJODE35bzY+a3Mi3Tw5Gew==[/tex] 为可去奇点,留数为 0.根据留数定理,[tex=15.071x3.786]qQLTXZj0/6+PqB8sHePUZqzgdXzC7tMebjCltv0uMgsc/a2luqKvOfTOd426M232W0Jfd9w++T2glJCCO6rkv2bb7UznyLqwVsAJay/ckOdxZht1D9sJveHG2eGHrhk3GQ9Avn04LsLHWIwSyyJFetpjP3LW6eFWt8cUlkxKNVpVYIbkc4EgqB9l/sEsrBaK[/tex].

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    • 0

      计算下列各积分(利用留数; 圆周均取正向)[p=align:center][tex=6.143x2.786]DxP+dllryumTdYfUjf+7XAGi5SU/ojWeUUgZFttIV+L/AUyukRvaczhWetJzDPya[/tex]

    • 1

      计算下列积分(利用留数: 圆周均取正向):[tex=6.214x3.643]97OR1LshmDYVkjbCGubfj7a5WaFtmHX4Hkv/Is9vSWxLcsKXqI5A6Yp//HWbIvf7NbfR/EHKwQuamL5f3dd7Iw==[/tex].

    • 2

      >>>x= [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9]>>>print(x.sort()) 语句运行结果正确的是( )。 A: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] B: [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9] C: [10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0] D: ['2', '4', '0', '6', '10', '7', '8', '3', '9', '1', '5']

    • 3

      set1 = {x for x in range(10)} print(set1) 以上代码的运行结果为? A: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} B: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10} C: {1, 2, 3, 4, 5, 6, 7, 8, 9} D: {1, 2, 3, 4, 5, 6, 7, 8, 9,10}

    • 4

      下列向量组中,( )是线性无关向量组。 A: (1, 1, 0), (0, 2, 0), (0, 0, 3) B: (1, 2), (3, 0), (5, 1) C: (2, 6, 0), (3, 9, 0), (0, 0, 2) D: (1, 2), (--3, 0), (5, 1)