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标题: 费费2-19 [打印本页]

作者: linlin2008    时间: 2005-4-21 06:53     标题: 费费2-19

19、问根号n是否大于100?(1)根号(n+1) > 100(2)“根号(n-1)<99”

请问此题的n一定是整数吗?可以是分数吗?

另外想问平方根号内的n一定为正数吗?OG上说”n^(1/2) denotes the positive number whose square is n.”


作者: himba    时间: 2005-4-21 06:59

.15 * .15 = .0215, and (.0215)^(1/2) = .15, it does not have to be an integer unless said so




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