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D( x )
y^-2*((x^6*y^2*z^4)/(x^-6))*z^-4 = 0
x = 0
x^-6 = 0
y^-2*((x^6*y^2*z^4)/(x^-6))*z^-4 = 0
y^-2*((x^6*y^2*z^4)/(x^-6))*z^-4 = 0
1*x^12 = 0 // : 1
x^12 = 0
x = 0
x = 0
x = 0
x^-6 = 0
x^-6 = 0
1*x^-6 = 0 // : 1
x^-6 = 0
x należy do O
x in (-oo:0) U (0:+oo)
(y^-2*((x^6*y^2*z^4)/(x^-6))*z^-4)^-3 = 0
1*x^-36 = 0 // : 1
x^-36 = 0
x należy do O
x belongs to the empty set
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