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标题: 求最值 [打印本页]

作者: 寒潭清 时间: 2005-8-28 18:45
标题: 求最值

abcde为自然数，且

1/a+1/b+1/c+1/d+1/e=1

那么a+b+c+d+e的最大值是多少？最小值又是多少？

作者: sean9991 时间: 2005-8-29 07:57
标题: my answer

Min value = 25, when a = b = c = d = e = 5.

Max value = 1862, when a = 2, b = 3, c = 7, d = 43, e = 1806 (42*43)

作者: 寒潭清 时间: 2005-8-31 10:40
标题: 正确,只是有一点小小失误[:E]

Max value = 1861, when a = 2, b = 3, c = 7, d = 43, e = 1806 (42*43)

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