Y=9/x-9

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Solution for Y=9/x-9 equation: 


D( x )

x = 0

x = 0

x = 0

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

Y = 9/x-9 // - 9/x-9

Y-(9/x)+9 = 0

Y-9*x^-1+9 = 0

-9*x^-1 = -(Y+9) // : -9

x^-1 = (Y+9)/9

-1 < 0

1/(x^1) = (Y+9)/9 // * x^1

1 = x^1*((Y+9)/9) // : (Y+9)/9

9*(Y+9)^-1 = x^1

x = 9*(Y+9)^-1

x = 9*(Y+9)^-1

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