12-(54000/x^2)

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Solution for 12-(54000/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)

12-(54000/(x^2)) = 0

12-54000*x^-2 = 0

-54000*x^-2 = -12 // : -54000

x^-2 = 1/4500

-2 < 0

1/(x^2) = 1/4500 // * x^2

1 = 1/4500*x^2 // : 1/4500

4500 = x^2

x^2 = 4500 // ^ 1/2

abs(x) = 30*5^(1/2)

x = 30*5^(1/2) or x = -(30*5^(1/2))

x in { 30*5^(1/2), -(30*5^(1/2)) }

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