(4z^-6)/(3z^-21)

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Solution for (4z^-6)/(3z^-21) equation: 


D( z )

3*z^-21 = 0

z = 0

3*z^-21 = 0

3*z^-21 = 0

3*z^-21 = 0 // : 3

z^-21 = 0

z należy do O

z = 0

z = 0

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

(4*z^-6)/(3*z^-21) = 0

4/3*z^15 = 0 // : 4/3

z^15 = 0

z = 0

z in { 0} 

z belongs to the empty set

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