2/z=7/z-1/11

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Solution for 2/z=7/z-1/11 equation: 


D( z )

z = 0

z = 0

z = 0

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

2/z = 7/z-(1/11) // - 7/z-(1/11)

2/z-(7/z)+1/11 = 0

2/z-7*z^-1+1/11 = 0

-5*z^-1 = -1/11 // : -5

z^-1 = 1/55

-1 < 0

1/(z^1) = 1/55 // * z^1

1 = 1/55*z^1 // : 1/55

55 = z^1

z = 55

z = 55

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