• 2022-06-01
    若已知级数[tex=3.714x3.286]WGu493lWbQkNjIXIJ06onT3QU0jn8OIdvbSEozq++L5iYU5MhSc0wTrCNvECtMFc[/tex] 的收敛半径为[tex=6.5x1.357]8WZN0goBGCBxHj8z0du2FBgWhVfUgmq9Pzh/8Sw4nTY=[/tex]. 试证级数 [tex=6.929x3.286]WGu493lWbQkNjIXIJ06onUhrA629m7A11jL1rVa4kmWH21E8JlR8KYWhCJznEEw9U3RA/R441vaWNWIygkauUA==[/tex]的收敛半径为[tex=7.571x2.786]xGuXb+WGabExcMy4WVzhLN8mjKojv7R2UqsYJrKBKwui3V8ncv9qmx8RA1F5HJcu7Tv34ISICAeBYbC2/o7srg==[/tex]
  • 解 级数[tex=17.214x3.286]WGu493lWbQkNjIXIJ06onUhrA629m7A11jL1rVa4kmWH21E8JlR8KYWhCJznEEw92iIIsZRcpxiF3lBcvrRUKBnp7CxjFcJn5nrRO4mkzASOveo6EyrcGe5v8RUfkNOqf/uXpjA0hGRmgsu9MxOdFog1lde4WXe3JAnE1Y1i+6evxQ/rgQZj9YgSYvFKV/Eu[/tex] ,而 [tex=3.714x3.286]WGu493lWbQkNjIXIJ06onT3QU0jn8OIdvbSEozq++L5iYU5MhSc0wTrCNvECtMFc[/tex]的收敛半径为[tex=1.071x1.214]Em8+wigx6qQG1XXBi/pdbg==[/tex]现求[tex=4.714x3.286]WGu493lWbQkNjIXIJ06onWuFPucvP5wTwEiEJobr6ryxmYrCq0DMd88jp+XgKj78[/tex]的收敛半径 :[tex=19.929x2.857]L18eGrrKFY+mBp5bNODi7BHF2gOmbUID0Sy6mIEueebz9bANzzs55VF0p7X+PDnL7rljGWmdIx4kscuJqImBjTuLd7n9MOHvbyhmXUWQmO7nS6rtY0g6llC6TKhaa2XMIXdokuXMB9wRYvLp8sW1qpL8B+psA7851NakB7cMD5meyQwAV4fA5rACtY4m1EoRqaNRtjXH8+es6x33gz0KicrEnd10BzarOJuUSea+srgVaBqosPiBVOQVaVKW58iqMN3oVBKEGo+pq0WmEWHrR7Dv/ZyjTHbgm7sfw2QR/3o=[/tex]从而知原级数收敛半径为[tex=7.714x1.357]S35Kmq0qqZhVx0feYzLlVXILZTPQGLFe3PyRecOvvbnm35kG5rC7WpTOPzateZ4Rj2RLU2xFQVDhGCbwdGz1lA==[/tex].

    内容

    • 0

      下面语句的输出结果是?range(len('HelloWorld')) A: [1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11] B: 11 C: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] D: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]

    • 1

      【单选题】请用地点定桩法在4分钟内记忆数字。 4 0 1 3 6 3 5 1 9 8 8 9 7 2 9 3 0 9 5 3 1 7 7 5 2 3 3 0 5 0 1 4 1 3 8 3 5 7 9 7 (5.0分) A. 已背 B. 未背

    • 2

      下面是图的拓扑排序的是?(多选)[img=340x240]1802faef6ebcc2a.png[/img] A: 2 8 0 7 1 3 5 6 4 9 10 11 12 B: 2 8 7 0 6 9 11 12 10 1 3 5 4 C: 8 2 7 3 0 6 1 5 4 9 10 11 12 D: 8 2 7 0 6 9 10 11 12 1 3 5 4

    • 3

      (1)5 7 9 11() () ()()(2)26 23 20 17()() 8()(3)1 2 4 7 11() () 29(4)7 3 8 3 9 3()()(5)1 1 2 3 5 8()()

    • 4

      当执行下面的语句定义一维数组a后,此数组的所有元素为 ( ) inta[10]; A.a[1],a[2],a[3],a[4],a[5],a[6],a[8],a[9],a[10],a[10] B.a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9] C.a[0],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],a[10] D.a[1],a[2],a [3],a[4],a [5],a [9],a [7],a [8],a [9],a [10],a [11]