y=2x+1/x-1

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Solution for y=2x+1/x-1 equation: 


D( x )

x = 0

x = 0

x = 0

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

y = 2*x+1/x-1 // - 2*x+1/x-1

y-(2*x)-(1/x)+1 = 0

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

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

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

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

x^1

x-2*x^2-1 = 0

x-2*x^2-1 = 0

DELTA = 1^2-(-2*(-1)*4)

DELTA = -7

DELTA < 0

x in { } 

x belongs to the empty set

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