19=10/x2

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Solution for 19=10/x2 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)

19 = 10/(x^2) // - 10/(x^2)

19-(10/(x^2)) = 0

19-10*x^-2 = 0

-10*x^-2 = -19 // : -10

x^-2 = 19/10

-2 < 0

1/(x^2) = 19/10 // * x^2

1 = 19/10*x^2 // : 19/10

10/19 = x^2

x^2 = 10/19 // ^ 1/2

abs(x) = (10/19)^(1/2)

x = (10/19)^(1/2) or x = -(10/19)^(1/2)

x in { (10/19)^(1/2), -(10/19)^(1/2) }

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