1/x^2=0.42

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Solution for 1/x^2=0.42 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)

1/(x^2) = 0.42 // - 0.42

1/(x^2)-0.42 = 0

1*x^-2 = 0.42 // : 1

x^-2 = 0.42

-2 < 0

1/(x^2) = 0.42 // * x^2

1 = 0.42*x^2 // : 0.42

2.38095238 = x^2

x^2 = 2.38095238 // ^ 1/2

abs(x) = 2.38095238^(1/2)

x = 2.38095238^(1/2) or x = -2.38095238^(1/2)

x in { 2.38095238^(1/2), -2.38095238^(1/2) }

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