1/2y^2=y-1/2

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Solution for 1/2y^2=y-1/2 equation: 


y in (-oo:+oo)

(1/2)*y^2 = y-(1/2) // - y-(1/2)

(1/2)*y^2-y+1/2 = 0

1/2*y^2-y+1/2 = 0

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

DELTA = 0

y = 1/(1/2*2)

y = 1 or y = 1

y in { 1, 1 }

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