1/2y^2-1/2y-3

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Solution for 1/2y^2-1/2y-3 equation: 


y in (-oo:+oo)

(1/2)*y^2-((1/2)*y)-3 = 0

(1/2)*y^2+(-1/2)*y-3 = 0

1/2*y^2-1/2*y-3 = 0

DELTA = (-1/2)^2-(-3*1/2*4)

DELTA = 25/4

DELTA > 0

y = ((25/4)^(1/2)+1/2)/(1/2*2) or y = (1/2-(25/4)^(1/2))/(1/2*2)

y = 3 or y = -2

y in { -2, 3 }

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