30/z=2

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Solution for 30/z=2 equation: 


D( z )

z = 0

z = 0

z = 0

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

30/z = 2 // - 2

30/z-2 = 0

30*z^-1 = 2 // : 30

z^-1 = 1/15

-1 < 0

1/(z^1) = 1/15 // * z^1

1 = 1/15*z^1 // : 1/15

15 = z^1

z = 15

z = 15

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