(2y/y-2)-(4/y-2)=4

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Solution for (2y/y-2)-(4/y-2)=4 equation: 


D( y )

y = 0

y = 0

y = 0

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

(2*y)/y-(4/y)-2+2 = 4 // - 4

(2*y)/y-(4/y)-4-2+2 = 0

(2*y)/y-4*y^-1-4-2+2 = 0

-4*y^-1 = 2 // : -4

y^-1 = -1/2

-1 < 0

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

1 = -1/2*y^1 // : -1/2

-2 = y^1

y = -2

y = -2

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