1/2n^2+1/2n

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Solution for 1/2n^2+1/2n equation: 


n in (-oo:+oo)

(1/2)*n^2+(1/2)*n = 0

1/2*n^2+1/2*n = 0

DELTA = (1/2)^2-(0*1/2*4)

DELTA = 1/4

DELTA > 0

n = ((1/4)^(1/2)-1/2)/(1/2*2) or n = (-(1/4)^(1/2)-1/2)/(1/2*2)

n = 0 or n = -1

n in { -1, 0 }

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