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主要内容

比较审敛法

问题

我们知道,
0, is less than, start fraction, 1, divided by, n, cubed, plus, 1, end fraction, is less than, start fraction, 1, divided by, n, cubed, end fraction
对于任意n, is greater than or equal to, 1.
考虑到这一事实, 直接比较测试是关于 sum, start subscript, n, equals, 1, end subscript, start superscript, infinity, end superscript, space, start fraction, 1, divided by, n, cubed, plus, 1, end fraction ?
选出正确答案:
不会做了?
不会做了?