It is prove that (5^n)-1 is divisible by 4 for all positive integers n
Hence prove, by mathematical induction, that for all positive integers n,
2(7^n)-3(5^n)+1 is divisible by 4
mathematical induction!!
2010-12-25 5:32 am
回答 (1)
2010-12-25 5:42 am
收錄日期: 2021-04-19 23:44:08
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