Răspunsuri

2014-01-24T15:56:45+02:00
F(1)=1-1+1=1
f(2)=4-2+1=3
F(3)=9-3+1=7
f(4)=16-4+1=13

deci ai {(1;2);(2,3);(3,7);(4;13)}

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