2/7-x=1/x

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Solution for 2/7-x=1/x equation: 


D( x )

x = 0

x = 0

x = 0

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

2/7-x = 1/x // - 1/x

2/7-x-(1/x) = 0

2/7-x-x^-1 = 0

2/7*x^0-1*x^1-1*x^-1 = 0

(2/7*x^1-1*x^2-1*x^0)/(x^1) = 0 // * x^2

x^1*(2/7*x^1-1*x^2-1*x^0) = 0

x^1

(2/7)*x-x^2-1 = 0

(2/7)*x-x^2-1 = 0

DELTA = (2/7)^2-(-1*(-1)*4)

DELTA = -192/49

DELTA < 0

x in { } 

x belongs to the empty set

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