2/x-2x

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Solution for 2/x-2x equation: 


D( x )

x = 0

x = 0

x = 0

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

2/x-(2*x) = 0

2/x-2*x = 0

2*x^-1-2*x^1 = 0

(2*x^0-2*x^2)/(x^1) = 0 // * x^2

x^1*(2*x^0-2*x^2) = 0

x^1

2-2*x^2 = 0

2-2*x^2 = 0

DELTA = 0^2-(-2*2*4)

DELTA = 16

DELTA > 0

x = (16^(1/2)+0)/(-2*2) or x = (0-16^(1/2))/(-2*2)

x = -1 or x = 1

x in { -1, 1} 

x in { -1, 1 }

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