回复：Problem 6

Choosing a1, a2, …, a(n) such that a1+a2+…a(n) is not equal to b(n-1) is not enough to apply the induction. If b(n) < a1+a2+...+an, then you have n numbers in M and for the induction to work you can only have n - 1.

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• 回复：回复：Problem 6 -屋漏痕- ♂ (224 bytes) () 07/28/2009 postreply 05:53:51

• 回复：回复：回复：Problem 6 -dynamic- ♂ (195 bytes) () 07/28/2009 postreply 09:14:51

• 回复：回复：回复：回复：Problem 6 -屋漏痕- ♂ (79 bytes) () 07/28/2009 postreply 10:07:10

• still off a littlt bit. -屋漏痕- ♂ (0 bytes) () 07/28/2009 postreply 10:58:07