y=-1/2x^2-1

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


x in (-oo:+oo)

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

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

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

1/2*x^2 = -(y+1) // : 1/2

x^2 = -2*(y+1)

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

abs(x) = (-2)^(1/2)*(y+1)^(1/2)

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

x in { (-2)^(1/2)*(y+1)^(1/2), -((-2)^(1/2)*(y+1)^(1/2)) }

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