5/9=9/y

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Solution for 5/9=9/y equation: 


D( y )

y = 0

y = 0

y = 0

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

5/9 = 9/y // - 9/y

5/9-(9/y) = 0

5/9-9*y^-1 = 0

-9*y^-1 = -5/9 // : -9

y^-1 = 5/81

-1 < 0

1/(y^1) = 5/81 // * y^1

1 = 5/81*y^1 // : 5/81

81/5 = y^1

y = 81/5

y = 81/5

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