y=220/(x^2)

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Solution for y=220/(x^2) equation: 


D( x )

x^2 = 0

x^2 = 0

x^2 = 0

1*x^2 = 0 // : 1

x^2 = 0

x = 0

x in (-oo:0) U (0:+oo)

y = 220/(x^2) // - 220/(x^2)

y-(220/(x^2)) = 0

y-220*x^-2 = 0

-220*x^-2 = -y // : -220

x^-2 = y/220

-2 < 0

1/(x^2) = y/220 // * x^2

1 = x^2*(y/220) // : y/220

220*y^-1 = x^2

x^2 = 220*y^-1 // ^ 1/2

abs(x) = 2*55^(1/2)*y^(-1/2)

x = 2*55^(1/2)*y^(-1/2) or x = -(2*55^(1/2)*y^(-1/2))

x in { 2*55^(1/2)*y^(-1/2), -(2*55^(1/2)*y^(-1/2)) }

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