Allison112200 Allison112200

05-03-2016
Mathematics

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In the sequence an=(-1)^n (n^2+1), find a2

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Namizaki Namizaki

05-03-2016

an=(-1)^n (n^2+1), find a2
a2=(-1)^2*(2^2+1)
a2=1*5
a2=5

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