9/y-9+1=y/y+9

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Solution for 9/y-9+1=y/y+9 equation: 


D( y )

y = 0

y = 0

y = 0

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

9/y-9+1 = y/y+9 // - y/y+9

9/y-(y/y)-9-9+1 = 0

9/y-9-9-1+1 = 0

9*y^-1 = 18 // : 9

y^-1 = 2

-1 < 0

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

1 = 2*y^1 // : 2

1/2 = y^1

y = 1/2

y = 1/2

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