1/3=4/z

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Solution for 1/3=4/z equation: 


D( z )

z = 0

z = 0

z = 0

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

1/3 = 4/z // - 4/z

1/3-(4/z) = 0

1/3-4*z^-1 = 0

-4*z^-1 = -1/3 // : -4

z^-1 = 1/12

-1 < 0

1/(z^1) = 1/12 // * z^1

1 = 1/12*z^1 // : 1/12

12 = z^1

z = 12

z = 12

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