3/z=-9

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Solution for 3/z=-9 equation: 


D( z )

z = 0

z = 0

z = 0

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

3/z = -9 // + 9

3/z+9 = 0

3*z^-1 = -9 // : 3

z^-1 = -3

-1 < 0

1/(z^1) = -3 // * z^1

1 = -3*z^1 // : -3

-1/3 = z^1

z = -1/3

z = -1/3

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