-2000x^(-2)=-(1/5)

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Solution for -2000x^(-2)=-(1/5) equation: 


D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

-2000*x^-2 = -(1/5) // + 1/5

1/5-2000*x^-2 = 0

-2000*x^-2 = -1/5 // : -2000

x^-2 = 1/10000

-2 < 0

1/(x^2) = 1/10000 // * x^2

1 = 1/10000*x^2 // : 1/10000

10000 = x^2

x^2 = 10000 // ^ 1/2

abs(x) = 100

x = 100 or x = -100

x in { 100, -100 }

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