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D( x )
x^-6*y^3*z^2 = 0
x = 0
6*x^-4 = 0
x^-6*y^3*z^2 = 0
x^-6*y^3*z^2 = 0
x^-6*y^3*z^2 = 0 // : y^3*z^2
x^-6 = 0
x naleu017Cy do O
x = 0
x = 0
6*x^-4 = 0
6*x^-4 = 0
6*x^-4 = 0 // : 6
x^-4 = 0
x naleu017Cy do O
x in (-oo:0) U (0:+oo)
y^-1*((-2*a^0*(x^-6*y^3*z^2)^-1)/(6*x^-4))*z^3 = 0
y^-1*((-2*(x^-6*y^3*z^2)^-1)/(6*x^-4))*z^3 = 0
-1/3*x^10*y^-4*z = 0 // : -1/3*y^-4*z
x^10 = 0
x = 0
x in { 0}
x belongs to the empty set
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