2y-4/x

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Solution for 2y-4/x equation: 


D( x )

x = 0

x = 0

x = 0

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

2*y-(4/x) = 0

2*y-4*x^-1 = 0

-4*x^-1 = -(2*y) // : -4

x^-1 = y/2

-1 < 0

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

1 = x^1*(y/2) // : y/2

2*y^-1 = x^1

x = 2*y^-1

x = 2*y^-1

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