Prove each of the following by mathematical induction,where n is a
natural number.
1. 1*4+2*7+3*10+...+n(3n+1)=n(n+1)^2
2. 1^3+3^3+5^3+...+(2n-1)^3=n^2(2n^2-1)
收錄日期: 2021-04-22 00:37:19
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080907000051KK01030