问题标题:
解这道英文数学题目findtheconsecutivenumberwhosecubes(i)differby37(ii)addupto35
问题描述:
解这道英文数学题目
findtheconsecutivenumberwhosecubes(i)differby37(ii)addupto35
汪嘉业回答:
设较小的数是n,i)那么:(n+1)^3-n^3=37,(n+1)^3-n^3=(n+1-n)[(n+1)^2+n(n+1)+n^2]=3n^2+3n+1=37n^2+n-12=0,(n+4)(n-3)=0,n=-4或3所以可以是-4,-3或3,4.2)(n+1)^3+n^3=35(n+1)^3+n^3=2n^3+3n^2+3n+1=352n^3+3n^...
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