0.8/z-0.2

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Solution for 0.8/z-0.2 equation: 


D( z )

z = 0

z = 0

z = 0

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

0.8/z-0.2 = 0

0.8*z^-1 = 0.2 // : 0.8

z^-1 = 0.25

-1 < 0

1/(z^1) = 0.25 // * z^1

1 = 0.25*z^1 // : 0.25

4 = z^1

z = 4

z = 4

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