3=3000000/x^2

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Solution for 3=3000000/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)

3 = 3000000/(x^2) // - 3000000/(x^2)

3-(3000000/(x^2)) = 0

3-3000000*x^-2 = 0

-3000000*x^-2 = -3 // : -3000000

x^-2 = 1/1000000

-2 < 0

1/(x^2) = 1/1000000 // * x^2

1 = 1/1000000*x^2 // : 1/1000000

1000000 = x^2

x^2 = 1000000 // ^ 1/2

abs(x) = 1000

x = 1000 or x = -1000

x in { 1000, -1000 }

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