2=242/x2

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Solution for 2=242/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)

2 = 242/(x^2) // - 242/(x^2)

2-(242/(x^2)) = 0

2-242*x^-2 = 0

-242*x^-2 = -2 // : -242

x^-2 = 1/121

-2 < 0

1/(x^2) = 1/121 // * x^2

1 = 1/121*x^2 // : 1/121

121 = x^2

x^2 = 121 // ^ 1/2

abs(x) = 11

x = 11 or x = -11

x in { 11, -11 }

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