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14-08-2017
Mathematics

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Given the following definition, compute Q(5). Q(n) = 0 if n = 0 2 if n = 1 4 if n = 2 Q(n − 1) + Q(n − 2) + Q(n − 3) if n > 2

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Ilyes39 Ilyes39

26-08-2017

We have
[tex]Q(0)=0\\ Q(1)=2\\ Q(2)=4[/tex]
and [tex]Q(n)=Q(n-1)+Q(n-2)+Q(n-3)\mbox{ when } n\ \textgreater \ 2.[/tex]
So
[tex]Q(3)=Q(2)+Q(1)+Q(0)=4+2+0=6\\ Q(4)=Q(3)+Q(2)+Q(1)=6+4+2=12\\ Q(5)=Q(4)+Q(3)+Q(2)=12+6+4=22. [/tex]

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