2-338/x^2

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Solution for 2-338/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)

2-(338/(x^2)) = 0

2-338*x^-2 = 0

-338*x^-2 = -2 // : -338

x^-2 = 1/169

-2 < 0

1/(x^2) = 1/169 // * x^2

1 = 1/169*x^2 // : 1/169

169 = x^2

x^2 = 169 // ^ 1/2

abs(x) = 13

x = 13 or x = -13

x in { 13, -13 }

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