这就是数字的美!
任意看一行,16…到n,非常不错的证明:
左侧
=优艾设计网_PS论坛n^3+(3n+2)^3+(2n+1)^3
=36n^3+66n^2+42n+9
右侧
×(6n+4)^2+(3n+2)×(6n+4)+(2n+1)
=36n^3+66n^2+42n+9
这就是数字的美!
任意看一行,16…到n,非常不错的证明:
左侧
=优艾设计网_PS论坛n^3+(3n+2)^3+(2n+1)^3
=36n^3+66n^2+42n+9
右侧
×(6n+4)^2+(3n+2)×(6n+4)+(2n+1)
=36n^3+66n^2+42n+9
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