mathematical induction
2010-12-21 4:15 am
prove 4x6^n+5^(n+1)-9 is divisible by 20 for all positive integers n .........you can skip the part of n =1 start at n =k
回答 (1)
2010-12-21 4:43 am
收錄日期: 2021-04-23 23:22:45
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