Prove by mathematical induction that:
1^2+2^2+3^2+...+n^2=n/6(n+1)(2n+1)
for all positive integers n
幫我計條數
2010-06-16 8:35 pm
回答 (1)
2010-06-16 8:43 pm
收錄日期: 2021-04-23 20:41:53
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