20/z=1

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Solution for 20/z=1 equation: 


D( z )

z = 0

z = 0

z = 0

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

20/z = 1 // - 1

20/z-1 = 0

20*z^-1 = 1 // : 20

z^-1 = 1/20

-1 < 0

1/(z^1) = 1/20 // * z^1

1 = 1/20*z^1 // : 1/20

20 = z^1

z = 20

z = 20

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