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Multimi in N*
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Multimi in N*
Posted:
Sat Jan 24, 2009 7:59 pm
by
alex2008
Sa se determine toate multimile
\( \{a_1;a_2;...;a_n\}\subset \mathb{N}^* \)
astfel incat
\( a_1^3+a_2^3+...+a_n^3=(a_1+a_2+...+a_n)^2 \)
,
\( (\forall)n\ge 1 \)
.
Posted:
Sat Jan 24, 2009 9:00 pm
by
mihai++
faci inductie dupa n pt
\( p(k): a_k=k \)
.