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由 yes 於 星期三 十月 19, 2005 11:36 pm
假設則所以所以4因所以所以即5│因此20│
[問題]HELP....
由 訪客 於 星期二 十月 11, 2005 10:47 pm
Given that : a1=7, an=7^a(n-1))
prove that for any m,n greater or equal to 2,
am-an is divisible by 20
用數學歸納法證明...
prove that for any m,n greater or equal to 2,
am-an is divisible by 20
用數學歸納法證明...