y=1/1+x^2

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


x in (-oo:+oo)

y = x^2+1/1 // - x^2+1/1

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

y-x^2-1 = 0

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

x^2 = y-1

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

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

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

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

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