U=(-1)n(2n/n+1)

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Solution for U=(-1)n(2n/n+1) equation: 



=(-1)U(2U/U+1)

We move all terms to the left:

-((-1)U(2U/U+1))=0



Domain of the equation: U+1))!=0

U∈R



We multiply all the terms by the denominator


-((-1)U(2U=0

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